a. Farmer Brown has a breed of white-feathered chickens that is homozygous for the dominant allele A which produces coloured feathers. These chickens are also homozygous for the dominant allele B for another independently assorting gene which inhibits colouration of the feathers. Farmer MacDonald has a different breed of white chickens that are homozygous recessive for both the A/a and B/b genes. One of farmer Brown's hens (AABB) is crossed with one of farmer MacDonald's roosters (aabb) to generate the F1 generation. What are the expected F2 phenotypes and proportions from the crossing the F₁ offspring?
a. Farmer Brown has a breed of white-feathered chickens that is homozygous for the dominant allele A which produces coloured feathers. These chickens are also homozygous for the dominant allele B for another independently assorting gene which inhibits colouration of the feathers. Farmer MacDonald has a different breed of white chickens that are homozygous recessive for both the A/a and B/b genes. One of farmer Brown's hens (AABB) is crossed with one of farmer MacDonald's roosters (aabb) to generate the F1 generation. What are the expected F2 phenotypes and proportions from the crossing the F₁ offspring?
Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Christine Evers, Lisa Starr
Chapter9: Patterns Of Inheritance
Section: Chapter Questions
Problem 5CT
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