Which of the following is the best representation of a testcross?
A) AA x aa
B) Aa x aa
C) AA x A?
D) A? x aa
E) AA x a?

Question

Quizplus · Accepted Answer

A testcross is a breeding of an individual with an unknown genotype (represented by a question mark in the genotype) with a homozygous recessive individual (aa). This helps to determine the genotype of the unknown individual. In this case, option D (A? x aa) is the best representation of a testcross as it shows an individual with an unknown genotype (represented by a question mark in the genotype) being crossed with a homozygous recessive individual (aa).

Which of the Following Is the Best Representation of a Testcross