Pigment of chicken feathers is regulated by two genes, the gene for feather pigm
ID: 167142 • Letter: P
Question
Pigment of chicken feathers is regulated by two genes, the gene for feather pigment C, and a gene that inhibits pigment production, I. A mother chicken, who is heterozygous for gene C, and heterozygous for gene I, is crossed with a father chicken, who is homozygous dominant for the pigment gene, and heterozygous for gene I. Inhibition is dominant to uninhibited, pigmented feathers are dominant to unpigmented feathers. Here is a DihybridCrossReview.pptx reviewing the FOIL method for determining gametes and performing a dihybrid cross if you need a refresher. A) What are the potential haplotypes of the gametes produced by the mother for these two genes? Enter your answer as a list of haplotypes separated by spaces such as AB ab Ab aB. Do not write a sentence. Do not list duplicate haplotypes. Alphabatize your haplotypes, e.g. Abe, not bA. B) What are the potential haplotypes of the gametes produced by the father for these two gametes? Enter your answer as a list of haplotypes separated by spaces such as AB ab Ab aB. Do not write a sentence. Do not list duplicate haplotypes. Alphabetize your haplotypes, e.g. Ab, not bA. C What is the probability of one of the offspring of these two chickens having pigmented feathers? % Enter your answer as a percent, but do not include the percent symbol, e.g. 6.25, not 6.25%, 0.0625, or 1/16 Report your answer to one decimal place, e.g. 66.7, not 66.66 or 66.60. D) In a population of 100 chickens, produced from the same parents, how many chickens would you expect to have white feathers? Round your answer to the lowest whole number since you cannot have a partial chicken, e.g. 65.8 would round to 65, as would 65.4, 65.5.Explanation / Answer
A)AB as both genes are heterozygous
b)Ab) because father is homozygous
c)50% because it will be AB so it will be 50% pigmented and 50% non pigmented
d)50 as half of them are pigmented others are white.