Biology, 13.10.2019 18:20 laurentsupreme

Ablack rooster mates with a white hen. based on their genotypes, the chance that the offspring will be checkered is 100 percent.
what is the rooster’s genotype? a) bb b) bb c) bb d) bw
what is the hen’s genotype? a) ww b) ww c) ww d) bw

Answers: 1

Show answers

Answers

Answer from: catchonyet

The rooster’s genotype is BB while the hen’s genotype is WW.

CO-DOMINANCE:

According to this question, a black rooster mates with a white hen to give an 100% checkered offsprings. This means that all of the offsprings are checkered. The checkered offsprings are hybrids of the two parental phenotypes i.e. black rooster and white hen. This means that the checkered offspring has a heterozygous genotype. To get an 100% heterozygous genotype in the F1 generation i.e. BW, both parents have to be homzygous, making this kind of inheritance an co-dominance. Therefore, the genotype of the black rooster will be homzygous i.e. BB while the genotype of the white hen will also be homzygous i.e. WW.

The cross can be find attached as an image.

Therefore, the rooster’s genotype is BB while the hen’s genotype is WW.

Learn more: link

Answer from: andrewmena05

Well, since the phenotype is checkered, we assume that there is codominance where offspring phenotype is a mix of the parents' phenotypes. If the offspring phenotype is a blend between the two parents', then there is incomplete dominance.

Genotypes of codominant parents is usually represented by upper case letters B and W, and the mixed genotype would be BW.

Since the genotype BW is 100%, the rooster's genotype can only be BB and the hen's genotype can only be WW to result in 100% BW.

The correspond Punnett square is therefore
B B
W BW BW
W BW BW

By the way, apparently that this example is academically made up, there are no checkered chickens. I don't know if this is true, since I don't raise enough chickens to verify this. :)

Ablack rooster mates with a white hen. based on their genotypes, the chance that the offspring will

Ablack rooster mates with a white hen. based on their genotypes, the chance that the offspring will

Answer from: Quest

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

Answer from: Quest

cells spend most of their time in interphase

Another question on Biology

Biology, 22.06.2019 01:00

Nucleic acid certain protein cell membranes certain carbohydrates

Answers: 3

Answer

Biology, 22.06.2019 03:30

If assuming tasting ptc as a simple gene trait,what other genotype would you select to put in this missing genotype box that could result in this phenotype

Answers: 3

Answer

Biology, 22.06.2019 13:00

This rapid change in species that rarely leaves behind fossil evidence is referred to as

Answers: 3

Answer

Biology, 22.06.2019 14:50

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.

Answers: 1

Answer

You know the right answer?

Ablack rooster mates with a white hen. based on their genotypes, the chance that the offspring will...

Questions