50 people because the widow's peak is dominant. Those who don't have a widow's peak do not have the gene.
If the gene for the hair pattern "widow's peak" is dominant, it means that individuals with at least one dominant allele will express the trait. We would expect 50 people to be heterozygous (Ww) for the widow's peak trait.
Heterozygous refers to a genetic condition in which an individual possesses two different alleles for a specific gene. Alleles are alternate forms of a gene that can code for different variations of a particular trait. In a heterozygous individual, one allele is dominant and the other is recessive.
The dominant allele is expressed in the phenotype, meaning it determines the physical appearance or characteristic, while the recessive allele remains hidden and does not show in the individual's observable traits. The notation for a heterozygous trait is typically represented by two different letters, one for each allele (e.g., Aa).
Assuming that "W" represents the dominant allele for widow's peak, and "w" represents the recessive allele.
Given that 50 people in the population have a widow's peak (homozygous dominant, WW), we can deduce that the other 50 people must have the genotype for heterozygous (Ww) to express the trait.
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Which conditions are possible reasons for declining genetic diversity of a species.
Answer:
Explanation:
loss of habitat
inbreeding
environmental changes
widespread distribution
Match the monomer to the correct polymer. (Link one from the top list to one from the bottom list, until each one has a link to one from the other.)
--
1a. polypeptide/protein
1b. polysaccharide
1c. nucleic acid
1d. lipid
--
2a. monosaccharide
2b. nucleotide
2c. fatty acid
2d. nucleotide
Answer:
Polymer Monomer
1. Polypeptide/protein -----------------------→ Amino acid
2. Polysaccharide ------------------------------→ Monosaccharide
3. Nucleic acid -----------------------------------→ Nucleotide
4. Lipid ----------------------------------------------→ Fatty acid
Explanation:
Monomers are simple molecules that when joined together and form chains become polymers, a process called polymerization, which is mediated by polymerase enzymes.
Monomers are simple molecules that when joined together and form chains become polymers, a process called polymerization, which is mediated by polymerase enzymes.
Peptides and proteins are formed by the addition of specific amino acid sequences. Polysaccharides, or complex sugars, are formed by the addition of monosaccharides, such as glucose. A nucleic acid, such as DNA or RNA, consists of chains or strands that are formed by nucleotide sequences. Lipids are the polymerized form of fatty acids.2. Explain what happens during Osmosis? What type of transport is Osmosis? 3. What is a hypertonic solution? 4. What is a hypotonic solution? 5. What is an isotonic solution?
define Vasoconstriction
in a way a elementary kid would understand
Vasoconstriction occurs when the blood vessels tighten, which causes the blood flow to slow down.
What is the difference between eukaryotic and prokaryotic cells?
Eukaryotic cells are found in bacteria and prokaryotic cells are not.
Prokaryotic cells are found in plants and animals and eukaryotic cells are not.
Eukaryotic cells contain organelles and DNA enclosed within a nucleus and prokaryotic cells do not.
Prokaryotic cells contain no organelles except DNA enclosed within a nucleus and eukaryotic cells do not.
___ is the purpose of your experiment; question or problem that you want to investigate.
a
Problem
b
Hypothesis
c
Solution
d
Conclusion
Answer:
B
Explanation:
The purpose of an experiment is to test the hypothesis. Hypotheses are formed based on observations, and an experiment is designed to see if the hypothesis is right.
Help! Will give brainlist
please help :(( How many Phosphorus atoms are in the chemical equation H3PO4
A. 4 Phosphorus atom
B. 1 Phosphorus atom
C. 12 Phosphorus atom
D. 3 Phosphorus atom
A group of organs that work together to perform a major function is called
is the pull of gravity on an object.
O a. Mass
O b. Element
N
O c Weight
d. Matter
Moving to another question will save this response.
Answer:
Mass
Explanation:
The measure of the pull of gravity on an object is called weight. For an object to have weight it must have mass.
I need help please with this...
Answer:
If the order is solid, liquid, gas
Explanation:
Compressibility:
solid- not compressible
liquid- not compressible
gas- compressible
Shape and Volume
solid: definite shape and definite volume
liquid: indefinite shape and definite volume
gas: indefinite shape and volume )varies with temperature and other factors)
Why can whales not breathe underwater?
Answer:
Whales are mammals and do not have gills, so they cannot take the dissolved oxygen that is in the water and turn in into a oxygen that they can breath.
Explanation:
Answer:
because they are mammals
Explanation:
the need to breath air into there lungs
The Burgess Shale biota is significant because it contains the: a. conodont animal b. fossils of rare marine plants c. earliest known benthonic community d. first shelled animals e. carbonized impressions of many extinct soft-bodied animals
Answer: Option E.
carbonized impressions of many extinct soft-bodied animals
Explanation:
The Burgesss shale biota is significant because it contains the carbonized impressions of many extinct soft-bodied animals because Burgess shake biota indicate best example and famous fossil records that contain soft bodied organisms with carbon impression . This fossil contain soft tissues fauna and floral and not mineralised structures which is not present in any other fossils. priapulid and annelid worms that are found in Burgess shale biota
Which of the following is true of cholesterol? 4 are correct.
A. it makes up part of the cell membrane structure
B. it is the precursor molecule to make sex hormones and bile
C. it is not found in animal products such as beef
D. it enters the cell via cell-mediated endocytosis
E. it is not found in dairy products such as butter
F.it is made by the liver
Answer:
F, it is made by the liver
Explanation:
What Is Behavior?
Behavior is a response to stimuli in the environment. Many animals use antipredatory
behavior to scare or startle
predators. This will either cause
the predator to leave, or give
the prey time to escape.
The spiny flower mantis on the left is naturally camouflaged as a flower. The one on the right
has its wings spread and
eyespots visible.
1. Describe how the behavior of
this insect could help it avoid
predation.
PLEASE HELPPP ASAPPP
Answer:
Many plants and animals use repellent chemicals to deter predation. Millipedes secrete hydrocyanic acid when disturbed.
example of kinetic energy.
Answer:
Moving Car. ...
Bullet From a Gun. ...
Flying Airplane. ...
Explanation:
If the offspring of the cross showed ccdominance, what would the eyes of the offsping look like?
Answer.. the offspring would have one circle eye and one star eye.
Answer:
That is what I would choose
Explanation:
When two different phenotypes of an organism are crossed, a third phenotype is created in which both of the parental traits are present. This is known as codominance.
What are the results of codominance cross?The concept of codominance states that although both phenotypes are dominant, they cannot coexist. Codominance would result in patches rather than merging, with areas of prominent white expression and areas of dominant red expression.
The statements made about codominance are all accurate. The full expression of both alleles is present.
The distinct results of both alleles are present in the heterozygous phenotype. A multiple-allele characteristic has (less than / only / more than) two alleles in the corresponding gene.
Therefore, The offspring would have one circle eye and one-star eye.
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What is a common source of proteins within the body (not from food)?
Answer:
I hope this helps
Explanation:
When a cell needs to make proteins, it looks for ribosomes. Ribosomes are the protein builders or the protein synthesizers of the cell. They are like construction guys who connect one amino acid at a time and build long chains. Ribosomes are special because they are found in both prokaryotes and eukaryotes.
Help me answer this please ASAP
Which are the main points of the cell theory? Select all that apply.
Answer Options:
a. Cells are the basic units of structure and function in living things.
b. New cells are produced from existing cells.
c. All cells enclose their DNA within a nucleus.
d. All living things are made up of cells.
Answer:
a. Cells are the basic units of structure and function in living things.
b. New cells are produced from existing cells.
d. All living things are made up of cells.
Explanation:
Cell theory states that cell living organisms are composed of at least one cell, which are the basic unit of life.
Cells are always produced from other living cells, and cannot spontaneously generate.
However, not all cells enclose their DNA within a nucleus, prokaryotic organisms (bacteria) do not possess a nucleus but still have DNA
Francine is developing a model of the carbon cycle, which involves the movement of carbon among various Earth systems. She begins by drawing the diagram shown below. Her friend Byron evaluates the model, and suggests that she thicken the arrow leading from fossil fuels to the atmosphere. His reasoning is that fossil fuels are being burned at a much faster rate than natural processes are restoring them. If Francine adopts Byron’s suggestion, how could her model be used to explain a significant change to Earth's systems?
Answer:
After adopting the suggestions of Byron the new or revised model would show that using fossil fuels at a rapid rate would lead to higher inputs of carbon dioxide to the atmosphere which will not be removed by the natural process of removing the excess amount of the carbon dioxide by the process of the photosynthesis and other.
The carbon dioxide would increase due to this and cause trapping of the solar heat in the atmosphere which leads to the greenhouse effect to warm the earth. That ultimately changes the climate of the earth.
Which molecule most likely has the greatest amount of stored energy in a bonds?
Answer:
Explanation:
Pryophosphate bond
Look at the data in the table to the right. Then, answer the question that follows.
Based on the data in the table, what conclusion can you draw about the energy needs of different cells?
All cells need the same amount of energy.
Skin cells use more energy than muscle cells.
Cells that need more energy, like muscle cells, have more mitochondria.
Cells that have more mitochondria are larger than other types of cells.
A 2-column table has 4 rows. The first column is labeled Cell type with entries typical animal cell, skin, muscle, liver. The second column is labeled Number of mitochondria with entries 1,000 to 2,000, 200, greater-than 2,000, greater-than 2,000.
Answer:
The correct answer is: C.
Muscle cells require more energy for contraction than any other cell. Hence, option C is correct.
What are mitochondria?The majority of the chemical energy required to drive a cell's metabolic operations is produced by mitochondria, which are membrane-bound cell organelles (mitochondrion, singular). Adenosine triphosphate, a tiny molecule, serves as a storage container for the chemical energy generated by the mitochondria (ATP).
It generates ATP through the process of oxidative phosphorylation. Small chromosomes found in mitochondria are found there. In most cases, mitochondria and consequently mitochondrial DNA are exclusively passed down from the mother.
Muscle cells contain a large number of mitochondria because they require more amount of energy for contraction. Hence, option C is correct.
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pls help i’m failing so ill give a brainiest n give likes from my other accs !!!
13) A polar bear swims in the ocean and grabs a fish to eat. Which one of the following is true of the polar
bcar?
A) The polar bear is a carnivore that is a predator of fish.
B) The polar bear is an herbivore that is a predator of fish.
C) The polar bear is an herbivore that is prey to fish.
D) The polar bear is a carnivore that is prey to fish.
16) how would an increase in predators likely affect a given prey population ?
A) The growth rate would decrease.
B) The growth rate would increase
C) birth rates would exceed death rates
D) The population would remain unchanged
19) Which one of the following statements best defines the role of a scavenger in the environment?
A) A scavenger gets energy by eating the dead organisms it finds.
B) A scavenger gets energy by breaking down organic wastes.
C) A scavenger gets energy by absorbing sunlight and producing glucose.
D) A scavenger gets energy by hunting and killing its prey.
20) Which one of the following roles is most similar to the role of a scavenger in an ecosystem?
A) Decomposer
B) Producer
C) Parasite
D) Herbivore
21) A vulture swoops down and grabs a dead mouse that it later eats. What is the vulture's ecological niche in
this situation?
A) Predator
B) Decomposer
C) Producer
D) None of the above
22) A type of relationship in which two species live in close association for long periods is known as
A) competition
B) symbiosis.
C) opportunism.
D) cohabitation
Answer:
13 is A
16 is A
19 is B
20 is A
21 is A
An organism that has adaptations that enable it to hibemate for long periods of time is more likely to by found in which of the following biomes:
forest
desert
grassland
tundra
List five organelles eukaryotes have that prokaryotes do not have. ( 5pts)
Answer:
Lysosomes and peroxisomes, Microtubules, Endoplasmic reticulum, Mitochondria, and Cytoskeleton
Explanation:
The characteristics that eukaryotes have are lysosomes, mitochondria, nucleus, ribosomes, and endoplasmic reticulum.
What are eukaryotes?Eukaryotes are lifeforms with nuclei and other membrane-bound organelles. Eukaryotic organisms include all animals, plants, fungi, and protists, as well as the majority of algae.
Prokaryotic organisms are the ones lacking a well developed nucleus. They do not possess lysosomes, mitochondria, nucleus, ribosomes, and endoplasmic reticulum.
Thus, these are five organelles that are present in eukaryotes but are absent in prokaryotes.
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How long has the light from a star 125,000 light-years away been traveling to reach Earth?
Answer:
Explanation:
Jan 02Jan 02, 2020 · Question: "How can the light of stars billions of light ye the maximum distance that light can travel in one year in the vacuum of space. Consequently, it takes billions of years for light to travel billions of light ..., 2020 · Question: "How can the light of stars billions of light years away from the earth have reached us if the earth is only thousands of years old?" Answer: Distant Starlight - A light-year is the maximum distance that light can travel in one year in the vacuum of space. Consequently, it takes billions of years for light to travel billions of light ...
Pls help i dont understand :(
Answer:
I think it might be D
Explanation:
I hope this helps~
Answer:
d
Explanation:
eukaryotes have membrane bound cells, while prokaryotes dont
True or False we can understand why we see natural resources like copper and gold where they are because we understand under which conditions they formed
Answer:
False
Explanation:
We cannot see the air like wise we can see copper and gold what they are we know which metal they are invented .
I think false
Is water abiotic or biotic?
Answer:Abiotic
Explanation:
There are two categories of these factors: abiotic and biotic. Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic factors include water, sunlight, oxygen, soil and temperature.