Answers
E) None of the possible solutions is accurate. E. coli organisms are added to a medium that contains both lactose and glucose.
Lactose can be broken down more slowly and with less energy than glucose. However, if lactose is the only sugar present, E. coli will immediately start using it as fuel. The lac operon genes, which encode vital enzymes for lactose absorption and processing, must be expressed for the bacteria to utilise lactose.
Since glucose is the preferred carbon source for E. coli cells, adding glucose to the medium will stop them from absorbing lactose. As a result, the lac-operon will be suppressed in these bacterial cells. B.
Lactose binds to the repressor and stops it from binding to the operator region if both glucose and lactose are present. As a result, the restriction on lac gene transcription is removed, and some mRNA is generated.
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Question :-
E. coli bacteria are placed into a medium containing both glucose and lactose. Which of the gene products (i.e., enzymes) listed below do you predict will be "turned on"?
A) -galactosidase
B) lacI
C) lacP
D) permease
E) None of the answer options are correct.
Related Questions
The judge eyed the lawyer as she argued her case. This judge happened to have a scale on his bench, like the kind that balances. The lawyer closed her case and the judge was silent. His eyes burned into the suspect. He had one hand on his jawline, another on the scales. The court waited for his decision.
What is the symbol?_________.
What does the symbol represent?________________________.
Answers
Is a symbol of Scales of justice and it represent the objective and fair weighing of two sides in a legal dispute.
What does the symbol stand for in courtThe scales of justice stand for the balance between truth and fairness in court system, the scales are held by a lady called the of Lady Justice, or Justitia in Latin that symbolizes the Roman goddess of justice. The symbol stand to remind people that they will get justice and also remind judges, attorneys and juries of their duty to serve justice in dispute and criminal cases . The symbol of justices is also used to present the balance between the support and opposition a case has and is used for weighing the two thereby reaching for fairness and just verdict.
With evidence and argument presented in court, the judge or jury have the duty to determine which side is heavier to pass judgment which the judge is about to do in the above question.
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which of the following ventricles is found under the corpus callosum? view available hint(s)for part a which of the following ventricles is found under the corpus callosum? fornix lateral ventricles third ventricle fourth ventricle
Answers
Lateral ventricles are divided by the septum pellucidum within the cerebrum are cavities known as the lateral ventricles.
What is the function of septum pellucidum?The septum pellucidum divides the right and left lateral ventricles midway. The cerebrospinal fluid (CSF), which cushions the brain, fills the spaces that make up the ventricular system of the brain.Each cerebral hemisphere contains a C-shaped hollow known as the lateral ventricle.
Ependyma lines the inside, which is filled with CSF. It has a 7 to 10 ml capacity. The septum pellucidum, a thin vertical sheet of nervous tissue that divides the two lateral ventricles, is surrounded by ependyma on both sides.
Therefore, Lateral ventricles are divided by the septum pellucidum within the cerebrum are cavities known as the lateral ventricles.
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How is energy causing motion or creating a change in water
Answers
Answer:
basically work requires energy so we can say energy is directly proportional to work SO FORMULA OF WORK IS = Force × distance so energy = work
Explanation:
sorry if that doesnt make sense
What is the power house of cell?
Answers
Answer:
Mitochondria
Explanation:
Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell.
What is the bushy head of a tree called
Answers
Answer:
Tree Crown
Explanation:
The tree's Crown is the upper part of the tree that contains the lateral branches above the tree trunk.
in the cochlea, specialized cells called hair cells convert the vibrations into electrical signals. these signals are then sent through the auditory nerve to the brainstem, where they are further processed and sent to the auditory cortex in the brain. in the auditory cortex, the signals are interpreted as sound. the brain can identify the pitch, volume, and timbre of the sound, as well as locate the source of the sound and identify specific sounds within a mixture of sounds (such as a person speaking in a noisy room).
Answers
The fluid in the cochlea moves in response to vibrations from the oval window. 25,000 nerve endings are set in action when the fluid travels.
These nerve terminals convert vibrations into electrical impulses, which travel to the brain via the eighth cranial nerve (auditory nerve). It is made up of little hair cells that border the cochlea. These cells convert vibrations into electrical impulses, which sensory nerves carry to the brain.
Mechanical vibrations are transmitted. Hair cells of the Corti organ convert mechanical sound waves into nerve signals. When the basilar membrane, on which the organ of Corti lies, vibrates, they are activated.
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label the trna and mrna with the appropriate terms. also, determine the correct sequence of bases for trna and the correct amino acid for the trna (refer to the genetic code to determine the amino acid that is coded). there are six targets total. you will not use all of the terms
Answers
Labeling trna and mrna with appropriate terms is important for understanding how genetic information is encoded and translated. The correct sequence of bases for trna and the correct amino acid for trna must be determined in order to accurately carry out the translation process.
Trna is a type of RNA (ribonucleic acid) molecule that is responsible for transferring amino acids to the ribosome during translation. It has a specific sequence of three bases, known as the anticodon, that pairs with the corresponding codon on the mrna. The trna also carries an amino acid that is specific to the codon on the mrna.
Mrna is another type of RNA molecule that carries genetic information in the form of codons. Each codon is a sequence of three bases that codes for a specific amino acid. When the trna carrying the corresponding anticodon pairs with the codon on the mrna, the trna is able to bring the amino acid and pair it with the codon on the mrna.
To determine the correct sequence of bases for trna and the correct amino acid for the trna, the genetic code must be consulted. For example, if the codon on the mrna is AUG, the corresponding trna sequence would be UAC and the corresponding amino acid would be methionine.
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Which of the following substances are produced by the body cells to protect uninfected cells from viral invasion ?
a. histamineb. complementc. natural killer celld. interferons
Answers
Interferons are produced by the body cells to protect uninfected cells from viral invasion. So, the correct option is (D).
What are Interferons?Interferons (IFNs) are defined as a group of signaling proteins which are released by host cells in response to the presence of many viruses. A virus-infected cell releases interferons that cause nearby cells to mount their anti-viral defenses.
These are a group of proteins called cytokines which are produced by white blood cells, fibroblasts, or T-cells as part of the immune response to viral infection or other immune triggers. The proteins' name comes from their ability to interfere with the production of new virus particles.
These substances are produced by the body cells to protect uninfected cells from viral invasion.
Thus, Interferons are produced by the body cells to protect uninfected cells from viral invasion. So, the correct option is (D).
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a bone has high concentration of calcium yet wants to absorb even more calcium in order to become more dense stronger. the movement of more calcium requires energy and would be done by
Answers
Answer:
a process called active transport. this process requires calcium channels to open and close in order to allow calcium ions to move into the bone. this process is powered by adenosine triphosphate (ATP) which is a molecule that stores energy.
Which of the following terms best describes groups of organisms that cannot easily be distinguished morphologically but show no gene flow between them, and are evolutionarily independent units? O Peripatric species O Incipient species O Cryptic species O Allopatric species
Answers
The terms that best describe groups of organisms that cannot easily be distinguished morphologically but show no gene flow between them and are evolutionarily independent are cryptic species, which are present in the third option.
What is a cryptic species?A "cryptic species" is a species that is difficult to distinguish from other species because of their similarity, and this can happen for a variety of reasons, such as physical characteristics that overlap with those of other species and are found in different organisms, including plants, animals, etc, an example is the pine marten, which is native to Europe and Asia and there are two distinct species of pine marten, the European pine marten and the Asian pine marten, which are difficult to distinguish from one another due to their physical similarities.
Hence, the terms that best describe groups of organisms that cannot easily be distinguished morphologically but show no gene flow between them and are evolutionarily independent are cryptic species, which are present in the third option.
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1. Cellular respiration is a series of chemical reactions that convert the energy in food molecules into energy stored in the molecule _________. Aerobic respiration requires the presence of Oxygen___________ and releases water and _________________ as waste products.
Answers
Answer:
1. H2O
2. H
3. 2 molecules of oxygen.
an ordered sequence of events (including interphase and the mitotic phase) that extends from the time a eukaryotic cell is first formed from a dividing parent cell until its own division into two cells.
Answers
Cell cycle is an ordered sequence of events (including interphase and the mitotic phase) that extends from the time a eukaryotic cell is first formed from a dividing parent cell until its own division into two cells.
A cell cycle is the sequence of events that occur in a cell as it develops and divides. A cell spends the majority of its time in what is known as interphase, where it expands, reproduces its chromosomes, and arranges for cell division. The cell then exits interphase, goes through mitosis, and divides completely.
The cell cycle could be considered as a cell's life cycle. In other words, it is the sequence of growth and development steps that a cell goes through between "birth"—formation by the division of a mother cell—and reproduction—division to produce two new daughter cells.
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A researcher designs an experiment to investigate whether soil bacteria trigger the synthesis of defense enzymes in plant roots. The design of the experiment is presented in Table 1. For each group in the experiment the researcher will determine the average rate of change in the amount of defense enzymes in the roots of the seedlings Table 1. An experiment to investigate the effect of soll bacteria on plant defenses Group Number of Seedings Type of Soil Treatment Solution 1 10 Sterlepotting sol Contains actively reproducing soll bacteria 2 10 Sterile potting sol Contains heille soll bacteria 3 10 Sterle porting soil Contains no bacteria Which of the following statements best helps justify the inclusion of group 2 as one of the controls in the experiment? A) I will show whether the changes observed in group 1 depend on the metabolic activity of Boll bacteria B) will show whether the changes observed in group 1 depend on the type of plants used in the experiment. C) It will show the average growth rate of seedings that are maintained in a nonsterile environment D) I will show the changes that occur in the roots of seedlings following an infection by soll bacteria.
Answers
Among the given statements (A) "I will show whether the changes observed in group 1 depend on the metabolic activity of Boll bacteria" best helps justify the inclusion of group 2 as one of the controls in the experiment.
In this instance, soil bacteria that were destroyed by heat are being employed to ascertain if the creation of enzymes by the plant is aided by the bacteria's metabolic products or just their physical form. Because the outcomes of these types of tests occasionally depend on the metabolic interactions between the pathogen (bacteria) and the host, this is a very helpful control (the plant). So, (A) is the right option.
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identify three ways that sexual reproduction increases genetic variability. for each, explain how it increases genetic diversity among the offspring
Answers
Answer:
1.by pouring more water
2. by taking more heat which enough than useWhich of the following represents an example of habitat suitability as an explanation of species abundance and distribution?
Group of answer choices (select all that apply)
Two closely related species of frogs have overlapping ranges and isolated on a single mountain.
As temperatures increase, tropical species are expanding their geographical range as more regions have preferred temperatures.
Darwin's finches are only found on the Galapagos islands because of dispersal limitations.
Answers
The following represents an example of habitat suitability as an explanation of species abundance and distribution : As temperature increase, tropical species are expanding their geographical range as more regions have preferred temperatures.
Tropical species are those that are indigenous to the tropics. Tropic rainforests, monsoonal tropical forests, dry (frequently deciduous) forests, spiny forests, deserts, savannahs, grasslands, and other habitat types can all be found in tropical ecosystems.
Because tropical rainforests receive constant warmth and rain, they are home to a diverse range of plants and animals. Monkeys, apes, gorillas, tigers, elephants, leopards, lizards, snakes, birds, and insects are among the most common animals found in rainforests.
Tropical climates are hot, humid, and rainy environments found primarily between the Tropics of Cancer and Capricorn. Tropical climates are classified into four types, according to Köppen: tropical rainforest, tropical monsoon climate, tropical savanna (dry winter), and tropical savanna (dry summer).
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Determine which energy use evaluation technique is being described and drag the explanation label to its appropriate classification category. You are placed in a small room and the amount of body heat you release raises the temperature of a layer of water that surrounds the room by measuring the water temperature, scientists can determine how much energy is expended Your height weight, age, gender, and physical activity estimate are used to estimate energy needs. You are hooked up to a cart that measures the amount of oxygen you consume; Instruments on the cart convert oxygen use to energy use, determining estimated caloric use. Direct calorimetry Indirect calorimetry Estimated energy requirement calculation < Prev 69 of 120 !!! Next → G S 9W MacBook Pro 90 FU F4 F5 590 A $ 4 % 5 00 * Il + 3 6 7 9 0 E R T Y o P
Answers
Calorimetry is the practice of tracking changes in a body's state variables in order to predict, within certain limits, the heat transfer resulting from those changes, such as those brought on by chemical reactions, physical alterations, or phase transitions. Calorimetry is done with a calorimeter. Joseph Black, a Scottish physician and scientist who was the first to distinguish between heat and temperature, is credited with developing the science of calorimetry.
A reference material for calorimetry must have specified thermal constitutive properties that are known and measured. The temperature and volume of a calorimetric substance are the only variables that may completely and quickly identify the pressure it creates, according to the traditional rule, which Clausius and Kelvin acknowledged. The melting of ice is an example of a transition that does not involve a phase change that is covered by this rule. This standard is deviated from by many materials, and the current classical calorimetry formula is insufficient to account for these variations. It is anticipated that the normal rule will be followed by the calorimetric material in this instance.
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2. Describe a specific marine relationship among marine organisms. Predict what
would happen in the marine ecosystem if this relationship no longer existed.
Answers
Marine ecosystems are aquatic environments with high levels of dissolved salt, such as those found in or near the ocean.
What are most marine organisms?
Plankton are the most common. Plankton make up one of three major groups of marine life. The other two groups are nekton and benthos (Figure below). Living things in the oceans are placed in these three groups.
What are marine organisms called?
The animals inhabiting the sea are called marine organisms. Marine organisms may be classified as Nektonic, Planktonic, or Benthic. The distribution of marine organisms depends on the chemical and physical properties of seawater, ocean currents & penetration of light.
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6. A high school student conducted an experiment. The student grew two organisms alone in a petri
dish. In graph "a" species 1 is shown growing alone, and in graph "b" species 2 is shown growing alone.
The student then grew the two organisms together in a new dish. Graph "c" shows the numbers of
Species 1 and 2 over time.
Explain what is happening in graph "c." Justify your answer with a scientific term & evidence from the
graphs.
Answers
In graph C, species 1 and species 2 are both in competition for resources.
What is competition in living organisms?Competition in living organisms is the process by which two or more living organisms compete for a limited resource such as food, water, space, and mates.
Two organisms are involved in a competition when they occupy the same trophic level in a food chain.
The experiment by the student shows two orgasms that use the same nutrient.
Species 1 and Species 2 both require the same nutrients for growth, hence, they compete for the same resources. When they are grown in the same medium, Species 1 grows more than species 2.
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In the readings, a claim is made that ice cooling is a good way to cool large buildings. Create an argument to support this claim. Give reasons and evidence from the texts. Also tell what you may already know about air conditioning and temperature control.
Answers
An argument to support the claim that ice cooling is a good way to cool large buildings is that it is a more efficient and cost-effective method than traditional air conditioning. Ice cooling works by storing energy in the form of ice during off-peak hours, and then using the stored energy to cool the building during peak hours. This reduces the amount of energy needed to cool the building, resulting in lower energy costs. Additionally, ice cooling systems are more efficient than traditional air conditioning systems, as they are able to maintain a more consistent temperature throughout the building.
I also know that traditional air conditioning systems are not as efficient as ice cooling systems, as they require more energy to cool the building. Additionally, traditional air conditioning systems are not as effective at maintaining a consistent temperature throughout the building, as they are more prone to fluctuations in temperature. This can lead to uncomfortable temperatures in certain areas of the building.
which of the following is a possible consequence of disabling the g2 checkpoint in the cell cycle?
Answers
the following is a possible consequence of disabling the g2 checkpoint in the cell cycle : incompletely replicated DNA may be passed to the two daughter cells; these cells could be lacking in specific genes or chromosomes and would likely not survive.
If DNA replication did not occur completely, the offspring cells would lack some or all of the genome. This could be disastrous if a cell lacked the genes required for proper function and health. The cell cycle will not progress to the next stage if the DNA is not replicated the DNA is not replicated, the cell cycle will not progress to the next stage. As a result, the subsequent division would not take place. This will result in cell death.
If the cell did not duplicate its DNA (as occurs during meiosis to produce gametes), each daughter cell would receive only one copy of each chromosome. Instead of 23 pairs, each cell would have 23 chromosomes (in other words, each cell would be haploid).
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which of the following is the first step perfomed after the blood colection bag is filled during a plasma collection?
Answers
Asking the patient to speak and spell his or her name and providing you with his or her birth date is the first step in collecting data from the patient.
Which blood sample should be drawn first in the order of blood collection?According to CLSI Procedures & Devices for such Collection for Capillary Blood Specimens; Certified Standard - Sixth Version, September 2008, the order for draw is based on that document.To produce a high-quality specimen, this standard suggests drawing EDTA tubes first, then other additive tubes, and finally serum specimen tubes.
What is the proper sequence for collecting blood tubes?The following is the proper draw order: a container or tube for blood cultures. Tube for sodium citrate (eg, blue closure) serum tubes, including ones that contain gels and clot activators
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Create a Punnett square showing a cross between the two F1 parent plants. Their offspring are the F2 generation.
Answers
When the two heterozygous parents for tallness are crossed, the F2 generation has three tall and one short plant, with a genotype ratio of 1:2:1 for the TT, Tt, and tt.
What is the Punnett square's significance?The punnett-square significance is that it explains the genotyping of the offspring of the parents, and here there are two parents for the tallness, whereas the tall is dominant over the short, and here there are two types of gametes produced, with three tall and one short, with the punnett-square explained below.
Hence, when the two heterozygous parents for tallness are crossed, the F2 generation has three tall and one short plant, with a genotype ratio of 1:2:1 for the TT, Tt, and tt.
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If the researchers monitored the cortical activity of the baboons as they viewed the color patches, they would most likely find increased activity in the:
A.occipital cortex.
B.temporal cortex.
C.somatosensory cortex.
D.motor cortex.
Answers
If the researchers monitored the cortical activity of the baboons as they viewed the color patches, they would most likely find increased activity in the Occipital lobe, where vision information is done.
The occipital lobe is the brain's visual processing area. It is linked to visuospatial processing, perception of distance and depth, color determination, object and face recognition, and memory formation.
The occipital lobes are situated at the back of the head and are in charge of visual perception, which includes color, form, and motion. Difficulty locating objects in the environment can be caused by occipital lobe damage. Difficulty recognizing colors (Color Agnosia)
Injury to the occipital lobes can cause vision problems such as blindness or blind spots, as well as visual distortions and inattention. The occipital lobes are also linked to a variety of behaviors and functions, such as visual recognition, visual attention, and spatial analysis.
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The evidence related to the Big Bang theory best supports which one of the following ideas?
The universe is cooling to the point where it will start to contract.
The elements formed by the Big Bang exist in the smaller ratios today.
The universe is warming very rapidly.
Radiation from the Big Bang is distributed evenly in the universe.
Answers
The evidence that related to the Big bang theory best supports the universe is warming very rapidly and the radiations from the Big bang is distributed evenly in the universe. Thus, the correct options are 3 and 4.
What is the Big bang theory?
The Big Bang theory is an explanation that supports the early development of the Universe. According to the big bang theory, the Universe expanded from an extremely small, extremely hot, and dense state that does not support life. Since the universe has expanded and become less dense and cooler and gradually the conditions on the planet become favorable.
Some of the key observations that supports the big bang theory include expansion of the universe, cosmic microwave radiations, and the abundance of the lightest chemical elements.
Therefore, the correct options are 3 and 4.
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Which of the following statements about erythropoietin
is true?
a. It facilitates the proliferation and differentiation of the erythrocyte lineage.
b. It is a hormone produced by the thyroid gland.
c. It is a hemopoietic growth factor that prompts lymphoid stem cells to leave the bone marrow.
d. Both a and b are true.
Answers
It facilitates the proliferation and differentiation of the erythrocyte lineage.
What is Erythrocyte lineage?
Erythrocyte lineage refers to the process of erythrocyte (red blood cell) production, maturation, and destruction. It begins with stem cells in the bone marrow, which differentiate into the cells that form the red blood cells. These cells then mature and are eventually released into the bloodstream, where they circulate for about 120 days before being destroyed.
What is Erythropoietin?
Erythropoietin (EPO) is a hormone produced by the kidneys that stimulates the production of red blood cells in the bone marrow. It is primarily used to treat anemia caused by chronic kidney disease, cancer, and HIV/AIDS, as well as to boost the performance of athletes.
Hence, Option A is correct.
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Visit the link below and use the information to
answer the following question.
Why Is Biodiversity Important? Who Cares?
Name three ecosystem services provided by
biodiversity.
Answers
Biodiversity provides ecosystem services such as regulation of ecosystem processes, provision of resources, and cultural and aesthetic value.
What is biodiversity?
Biodiversity, or the variety of species and ecosystems present in an area, is important for a number of reasons. Here are three ecosystem services provided by biodiversity:
Regulation of ecosystem processes: Biodiversity helps to regulate the processes that sustain life, such as the water cycle, nutrient cycling, and pest control. For example, a diverse array of predators helps to keep prey populations in check, while a variety of plants and microbes help to recycle nutrients and maintain soil health.
Provision of resources: Biodiversity provides us with a wide range of resources, including food, medicine, timber, and fuel. Many of the crops that we rely on for food, such as rice, wheat, and corn, are pollinated by bees and other insects, which are essential components of biodiversity.
Cultural and aesthetic value: Biodiversity is also important for cultural and aesthetic reasons. Many people derive enjoyment and inspiration from observing and interacting with the natural world, and the loss of biodiversity can diminish these experiences.
Given the numerous benefits that biodiversity provides, it is important to protect and conserve it. Biodiversity is vital for maintaining the health and functioning of ecosystems, which in turn supports the well-being of humans and other species.
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Which of the following activities would be associated with the parasympathetic division of the autonomic nervous system? a. resting and digesting b. release of both acetylcholine and epinephrine c. increased heart rate d. "fight-or-flight" response e. release of epinephrine only
Answers
The activation of the parasympathetic branch of the autonomic nervous system is associated with resting and digesting.
What is the parasympathetic nervous system ?One of the two functionally separate and perpetually active divisions of the autonomic nervous system is the parasympathetic nervous system (PNS). It opposes the sympathetic nervous system, which is the other (SNS).
In calm "rest and digest" situations, the parasympathetic nervous system predominates, whereas the sympathetic nervous system activates the "fight or flight" response in stressful circumstances.
Therefore, The activation of the parasympathetic branch of the autonomic nervous system is associated with resting and digesting.
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You are a researcher on a behavior genetics study studying identical and fraternal twins; based on what has been discussed in lectures, you would propose that the environment was responsible for a given behavior when you find which of the following patterns of correlations?Select one:a. .70 for identical twins; .35 for fraternal twins.b. .35 for identical twins; .70 for fraternal twins.c. .35 for both identical and fraternal twinsd. one cannot determine environmental effects in a behavior genetics study, only genetic effects
Answers
Environment was responsible for a given behavior when you find 0.35 for both identical and fraternal twins patterns of correlations.
Fraternal twins account for two-thirds of all twins worldwide. Around the world, the rate is about 3 in 1,000. Only one-third of the world's twins are identical.
One fertilized egg (ovum) splits and evolves into two babies with identical genetic information to form identical or monozygotic twins. Two eggs (ova) are fertilized by two sperm to produce two genetically distinct children known as fraternal or dizygotic twins.
Same-sex fraternal twins can have strikingly similar appearances. Fraternal twins, like all siblings, are the result of two individually fertilized eggs from the same mother and father. They are genetically identical to non-twin siblings.
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WILL MARK BRAINLYIST
Answers
1 = Decomposition
2 = Combustion
3 = Double-replacement
4 = Synthesis
5 = Single-replacement
I tried my best, I hope it's right!
What is the power house of cell?
Answers
Answer:
mitochondria
Explanation:
The power house of a cell is the mitochondria. The mitochondria are organelles found within the cytoplasm of eukaryotic cells that are responsible for generating the majority of the cell's energy in the form of ATP (adenosine triphosphate). ATP is the primary energy currency of cells, and it is used to power a wide variety of cellular processes, including the synthesis of proteins, the transport of molecules across cell membranes, and the contraction of muscles.