Question

A testcross is performed on an individual to examine three linked genes. The most frequent phenotypes of the progeny were Abc and aBC, and the least frequent phenotypes were abc and ABC. What was the genotype of the heterozygous individual that is testcrossed with the correct order of the three genes?

A) Abc aBC
B) BAC/bac
C) bcA/BCa
D) aBc/AbC
E) bAc/BaC

Answer 1

The best answer is"E"

bAc/BaC

Step-by-step explanation:

The essence of genetic Testcrossing between a homozygous recessive individual and a corresponding suspected heterozygote is to determine the genotype of the suspected heterozygote.