A testcross is always performed between the individual that is heterozygous for the genes to be mapped and an individual who is ________.
A) Heterozygous for the genes
B) Homozygous dominant for the genes
C) Homozygous recessive for the genes
D) Lacking the genes
E) None of the answers are correct

Question

Quizplus · Accepted Answer

A testcross is performed between an individual heterozygous for the genes and an individual homozygous recessive for the genes. This helps to determine the genetic makeup of the heterozygous individual and to map the location of the genes on a chromosome.

A Testcross Is Always Performed Between the Individual That Is