Question

Two organisms, AABBCCDDEE and aabbccddee, are mated to produce an F1 that is self-fertilized to produce F2. If the capital letters represent dominant, independently assorting alleles, a. How many different genotypes will occur in the F2b. What proportion of the F2 genotypes will be recessive for all five locic. Would you change your answer to part (a) and/ or (b) if the cross (P1) occurred between AABBCCDDEE X aaBBccDDEE parents?d. Would you change your answer to part (a) and / or (b) if the initial cross (P1) occurred between AABBCCDDEE X aabbccddEE parents

Answer 1

Answer:

a) How many genotypes will occur in F2

--The genotypes would be- AA Aa aa BB Bb bb CC Cc cc DD Dd dd EE Ee ee (15 genotypes)

Reason-

This is because, after crossing the parents, the F1 generation would all be Heterozygous dominant since one parent is homozygous dominant, while the other is homozygous recessive.

b) 25% of all F2 genotypes would be recessive across the 5 loci

Reason-

This is because each loci would produce only a 25% chance for a recessive trait, which would results to a general probability of 25% also.

c) Yes i would change my answer in A and B if the parent cross was- AABBCCDDEE X aaBBccDDEE

d) Yes i would change my answer in A and B if the parent cross was- AABBCCDDEE X aabbccddEE