Question
x. In a hypothetical domesticated breed of pigeon found of Asia, it has been observed that if females of a perhaps in the s are crossed with males of a true-breeding line that true-breeding line that have white have black plumage and the hybrid progeny an extra toe on each foot that will have barred blue plumage and extra toes. If the female hybrid progeny white males with normal feet, then half the testcross progeny barred with extra toes and half have white plumage and extra toes, and half have blue pl females have the umage solid blue plumage with normal feet and half have solid white plumage with normal feet. If the male hybrid progeny are testcrossed to the solid white females with normal feet, then the following results are noted. BB WW Tr bbw w 10% barred blue males with extra toes 10% solid blue males with normal feet 10% barred blue females with extra toes 10% solid blue females with normal feet 10% (barred) white females with extra toes 10% solid white females with normal feet 10% (barred) white males with extra toes 10% solid white males with normal feet 2.5% solid blue males with extra toes 2.5% barred blue males with normal feet 2.5% solid blue females with extra toes 2.5% barred blue females with normal feet 2.5% solid white females with extra toes 2.5% (barred) white females with normal feet 2.5% solid white males with extra toes 2.5% (barred) white males with normal feet What modes of inheritance or types of gene action are involved (2 2 pts)
Explanation / Answer
BbWwTt x bbwwtt
Barred blue with extra toes 20%
Solid blue with normal feet 20%
Solid white normal feet 20%
Barred white extra toes 20%
Solid blue with extra toes 5%
Solid white with extra toes 5%
Barred blue normal feet 5%
Barred white normal feet 5%
Genes are segregating for 10 different loci, because normal of their similar distribution. Normal feet have distributed 50% and extra toes are distributed 50%. So both genes are not linked; they are equally segregated (1:1). Now if we see barred blue, barred white, solid blue and solid white all have 25% distribution; so they have 1:1:1:1 ratio. This mean every allele is segregating. That mean they follow the law of segregation of Mendel.
