Assuming no gene linkage, in a dihybrid cross of AABB x aabb with AaBb F1 heterozygotes, the ratio of the F1 gametes (AB, aB, Ab, ab) that will give rise to the F2 offspring is 1:1:1:1.
Gene linkage is the proclivity of genes or segments of DNA closely located somewhere along chromosomes to segregate together during meiosis and thus be inherited together.
Gene linkage evaluation is an effective method for determining the chromosomal position of disease genes. It is based on the discovery that genes that are physically close to one another on a chromosome stay connected during meiosis.
Genes that are close enough together on a chromosome will often seem to "stick together," and the variants (alleles) of those genes that are close together on a chromosome will more often than not be inherited as a pair. This is known as genetic linkage or gene linkage.
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There are multiple lines of evidence that provide support for common ancestry and evolution. Write 3-4 paragraphs describing at least three of them in detail. Provide at least one example for each line of evidence.
(I need the full three to four paragraphs ASAP please please please)
Answer: Determining a substance's physical or chemical identity. What are the two main requirements for identification? The adoption of testing procedures that give characteristic results for specific standard materials and the number and type of tests needed to identify a substance to exclude all other substances.
In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of allele a is 0.2. What is the frequency of individuals with Aa genotype? will reward brainly for best answer with explanation...please no more links or i will report
Answer:
0.42
Explanation:
To estimate the frequency of alleles in a population, we can use the
According to this equation:-
p =
q =
p + q = 1.0
(p + q)
2
= 1 so p
2
+ 2pq + q
2
= 1
p
2
2pq = frequency of Aa
q
2
p+q = 1
0.3 + q = 1
q = 1 - 0.3 = 0.7
Aa = 2pq = 2* 0.3 * 0.7 = 0.42.
A sperm cell belonging to a red fox contains 16 chromosomes. How many chromosomes would be in the red fox's brain cell?
Answer:
the red fox has 38 chromosomes,
Explanation:
The moray eel and grouper fish hunt together. When both hunt together, prey barely stands a chance: hide in the reef, the eel eats you; dash for open water, the grouper grabs you. Which symbiotic relationship is described above?
A. Coevolution
b. Mutualism
c. Parasitism
d. Commensalism
Answer:
We can immediately cross-out C
We can also cross-out A.
Now we have B and D. Commensalism and Mutualism. Now, commensalism is an association between two organisms in which one benefits and the other derives neither benefit nor harm.
Mutualism is the doctrine that mutual dependence is necessary to social well-being.
I would say D: Commensalism. Both fish can survive without each other.
which term best describes the role of a tick living on another animal?
Answer:
a) parasite
Explanation:
hopefully this helps
Answer:
A
Explanation:
Parasite, Because a tik living on another animal would be a "vampire" organism otherwise known as a parasite.
Question 5 (2 points)
The moon
around the Earth due to its speed of motion and the pull of
Word Bank:
magnetism revolves
rotates
gravity
Blank 1:
Blank 2:
Submit
Answer: blank 1: rotates
blank 2: gravity
Explanation:
fill in the blanks......
the new cells that arise after cell division are called _____
Answer:
the new cells that arise after cell division are called daughter cells.
To help your investigation, here is some more data about the farm.
The chicken population was started with chicks from a different farm.
Chickens are raised in barns where bacteria can spread easily between chickens.
CJ, E. Coli, and Salmonella bacteria are all present in the barns.
Some of the E. Coli and Salmonella bacteria have alleles that make them resistant to the FQ antibiotic.
To stop disease from growing in the barn, the FQ antibiotic is fed to the chickens a lot.
Choose which way of evolution caused the FQ antibiotic resistance.
Gene Flow
Genetic Drift
Natural Selection
What is the best fit option here? Form a hyptothesis
This is my hypothesis, is it right ?
If the chicken population is consistently given the FQ antibiotic, then natural selection leads to antibiotic resistance, because some chickens could have some of the bacterias that develop mutations allele and they can resist against FQ antibiotics.Bacteria which are resistant will continue to increases and grows in number over time. In the end, the chicken population are mainly resistant bacterial, thus making this the likely mechanism of evolution.
Answer:
1) Natural selection
2) Hypothesis: The excessive use of FQ antibiotics on chickens leads to the fixation of new genes -by natural selection- that result from mutations in the bacterial genetic material, which makes these cells become even more resistant to the drug.
Explanation:
1) Natural selection selects beneficial alleles and increases their frequency in the population.
Natural selection results in adaptation, which means the increase of the aptitude phenotype. Aptitude is the contribution of each genotype to the next generation.
In many cases adaptations, resulting from natural selection can be correlated to environmental factors or selective pressures applied by other organisms or habitat.
Let us remember that, a mutation is a change or alteration in DNI sequences that introduce new variants. Many of these are eliminated, but some of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection.
So, in the exposed chickens´ example, we are focussing on bacteria populations.
The selective pressure or modeling environmental factor is the FQ antibiotic. The bacteria´s response to antibiotics is the survival of only those that carry mutations. Natural selection benefits these mutations. Bacteria survive and become more resistant2) Hypothesis.
First, remember that the hypothesis is a conjecture. The researcher hypothesizes in order to predict what is going on or what is expected to occur. A hypothesis is a claim of how it works a relation between two or more variables. Usually, it is written in the present time.
So in this example, we want to correlate the use of antibiotics with bacteria resistance.
I would hypothezise as following,
The excessive use of FQ antibiotics on chickens leads to the fixation of new genes -by natural selection- that result from mutations in the bacterial genetic material, which makes these cells become even more resistant to the drug.
This hypothesis probably states the same as yours but turns to be more concise. The hypothesis needs to go to the point. If you want to be more specific, you can probably add some specific hypotheses to dig into your work.
We have that the,Natural selection caused the FQ antibiotic resistance.
Natural selectionGenerally , Natural resolution causes a reaction that leads to antibiotic resistance, Mutation in micro organism make them resistant to antibiotics and when they reproduce similarly ,they will pass by this resistant trait to their offspring, which will outcomes into a completely resistant generation.
In the give up ,result is a populace of in most cases resistant bacteria.
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All of the following are complications that can result from an individual suffering from an eating disorder except
A heart disease
B. dieting regularly
C. kidney damage
D. death
Answer:
The answer is B
Explanation:
Hope this helps
Answer:
B. dieting regulraly
Explanation: correct on edge 2021
just got it right ; )
The layer of the atmosphere where all wether occurs
what food security challenge currently facing your community?
Answer:
I am not sure what you are looking for but some food is limited due to the pandemic and I am having a hard time obtaining certain goods.
Explanation:
PLEASE HELP! I DONT UNDERSTAND
what is the equation of Photosynthesis and cellular respiration in a chemical formula?
Answer:
I would type it up, but I decided to insert a picture.
Explanation:
A group of ducks in the same area is a ? Environment, Community, population, organism 
Answer:
community
Explanation:
Which of the following symptoms is absent in “the depletion syndrome of the elderly”?
feeling worthless
losing interest in things
physical symptoms
self-blame
Answer:
self-blame i think if i am wrong pls tell me
2. Geothermal energy is possible where there is
*
O A wind.
O Boil.
O C coal
O O magma.
Answer:
Explanation:
Option D magma is the correct answer
Convert the DNA strand to mRna, then use the codon chart to translate the codons into amino acids.
DNA → TAC CAT GGA ATT ACT
mRNA →
Amino acids →
I NEED HELP PLEASE
Answer:
DNA → TAC CAT GGA ATT ACT
mRNA: AUG GUA CCU UAA UGA
Amino acids: met-val-pro-stop
Explanation:
Please Help!! Due soon! I need this grade
What are ancestral traits?
What is a derived trait?
Explain how organisms are placed in a cladogram.
How do genetic connections help to organize species?
What are some disadvantages of using genetics for categorization?
What is a virus?
How are viruses categorized?
List and describe the four main viral shapes.
1.
2.
3.
4.
Describe a lytic infection.
What is a lysogenic infection?
What are the steps of a lytic infection?
What are the steps of a lysogenic infection?
How are viruses used in gene therapy?
What is the main difference between bacteria and virus?
Answer:
1. An evolutionary trait that is homologous within groups of organisms (see homology) that are all descended from a common ancestor
2. Derived traits are those that just appeared (by mutation) in the most recent ancestor -- the one that gave rise to a newly formed branch.
3. A cladogram uses lines that branch off in different directions ending at a clade, a group of organisms with a last common ancestor.
4. It helps us to form a cognitive framework of understanding complexity.
5 Because it is a learned trait. For some domains, like Bacteria and Archeabacteria, DNA is transferrable
6. A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.
7 Polyhedral, Helical, Complex, Spherical
8. Sometimes referred to as temperate or non-virulent infection, does not kill the host cell, instead using it as a refuge.
Explanation:
Hope that helps sorry I could not get all of it done, but I am busy doing my school work
What pigment replaces chlorophyll in
the fall season?
A. carotene
B. betatene
C. hypotene
Answer:
A. Carotene
Explanation:
It is an orange/red pigment which is seen during the fall.
I NEED HELP FAST PLEASE HELP ME
Genetic Diseases are very common.
Answer:
Cystic Fibrosis is a chronic, genetic condition that causes patients to produce thick and sticky mucus, inhibiting their respiratory, digestive, and reproductive systems. Like Thalassemia, the disease is commonly inherited at a 25 percent rate when both parents have the Cystic Fibrosis gene.
A loan of $ 8000 was paid back in 3 years of monthly installments $400. the interest on the loan as a percentage was?
Answer:
43.2%
Explanation:
When taking the sum and dividing it between 36 mo aka 3yrs, you get 222.222222. And the difference is 43.2%
Mutations are a source of variation in:
A)asexually reproducing organisms
B)neither option
C)both options
D)sexually reproducing organisms
What is the process of mountain building called?
Answer:
Orogeny is the process of mountain building, and may be studied as a tectonic structural event, as a geographical event and a chronological event, in that orogenic events cause distinctive structural phenomena and related tectonic activity, affect certain regions of rocks and crust and happen within a time frame.
Explanation:
hope this helps if it does can i get brainlist
4.
Humans contain 23 pairs of chromosomes in their body cells. After mitosis, it is expected that the daughter cells would each have a total of chromosomes _____. In sex cells undergoing meiosis I, it is expected that the two daughter cells would contain _____ chromosomes,and after meiosis II, ______ chromosomes.
A. 23, 23, 23
B. 46, 12, 12
C. 46, 23, 23
D. 46, 46, 46
Answer:
B.46, 12, 12
Explanation:
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Сотраге and contrast Simple Dominance to Incomplete Dominance."
Answer:
Simple dominance is when the dominant gene in a heterozygous organism expresses the dominant phenotype. Incomplete dominance is when a heterozygous organism exhibits a blending of both genes, recessive and dominant. Red and white flowers will "blend" and make pink flowers.
Incomplete dominance, only one allele in the genotype is seen in the phenotype. In simple dominance, both alleles in the genotype are seen in the phenotype. In incomplete dominance, a mixture of the alleles in the genotype is seen in the phenotype.
What is the difference between diurnal and nocturnal?
Choose all that apply
Question 8 options:
diurnal means awake during the day, and use the light to their advantage
nocturnal active at night.
nocturnal mean awake during the day, and use the light to their advantage.
diurnal means active at night
Answer:
diurnal means awake during the day, and use the light to their advantage
nocturnal active at night.
Explanation: Diurnal means active during the day, such as a mosquito meanwhile, a nocturnal animal or being is only active during the night, and sleeps the day away, such as a bat
Hope this helps ^^
Diurnal means awake during the day time, and use the light to their advantage. Nocturnal means active at night time. Thus, the correct options will be A and B.
What is Diurnal and Nocturnal?Based on the activeness of an organism during a day or 24 hours time period, the animals or organisms can be classified into two different types which are nocturnal and diurnal organisms. Nocturnal animals are the animals which are most active during the night time, and diurnal animals are the animals which are active during the daytime.
Diurnal animals are those animals which are awake during the day time, and use the light energy to their advantage. Nocturnal animals are the animals which are active at the night time.
Therefore, the correct options will be A and B.
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What is happening to the number of the cells through each phase from zygote to morula to blastocyte?
Answer:
They are being divided by 2
Explanation:
If mitosis goes well, the zygote will continue to grow until it reaches the next phase of prenatal development. The period of the zygote is quite brief, lasting for about four days. Around the fifth day, the mass of cells becomes known as a blastocyst.
Part D
Do you think one of your solutions is clearly better than the other? Give reasons for your answer.
Answer:
No, I don’t. They both have significant pros and cons, and there’s not a lot of scientific evidence available to determine whether one solution is better than the other.
Explanation:
Edmentum
Assume that you discover a new human gene that you believe is located on the Y chromosome although not in the region (pseudoautosomal) of the Y that is homologous with part of the X chromosome. How would you map this gene with respect to the other genes on the Y chromosome
Answer:
by performing a bioinformatic analysis in order to discover Y chromosome-linked mutations associated with defective phenotypes. In this case, it is expected to discover two or more loss of function mutations located in the coding region of the target gene on the Y chromosome in different males, and then associate such mutations with altered phenotypes caused by the inactivation (loss of function) of this gene
Explanation:
The genes located on the Y chromosome exhibit a uniparental mode of inheritance (i.e., these genes are only transmitted from father to their sons). This situation makes difficult to map the target gene since recombination does not occur for genes that are only located on the Y chromosome, hampering the development of a linkage map containing this gene. In this case, it is possible to directly associate genetic mutations located at the same genomic region (locus) on the Y chromosome with a particular altered phenotype in males carrying these mutations, which can be in principle associated with the inactivation of the target gene (loss of function mutations) in these individuals.
In bacterial communities, where resources are often limited, survival requires the ability to sense, respond to, and cooperate or compete with neighboring organisms.
a. True
b. False
Answer:
Explanation:
True.
In bacterial communities, where resources are often limited, survival requires the ability to sense, respond to, and cooperate or compete with neighboring organisms is a true statement.
What are Bacterial communities?Bacterial communities differ in their species makeup, the niches they occupy, and the effects they have on various ecosystems.
Communities defy a single, fundamental definition due to their complexity. Instead, they offer fascinating illustrations of dynamic processes that vary with ecological size. In the beginning of microbiology, there were difficulties in describing and classifying communities.
Robert Koch revolutionized the study of microbiology in the late 1800s by inventing his techniques for proving the link between an infection and an organism (Koch, 1876). Koch's hypotheses continue to be the "gold standard" for linking germs to illness or any other interesting event.
Therefore, In bacterial communities, where resources are often limited, survival requires the ability to sense, respond to, and cooperate or compete with neighboring organisms is a true statement.
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