Chapter 12.5: The Testcross: Revealing Unknown Genotypes

Question 1

Define testcross

Answer 1

a mating between a phenotypically dominant individual of unknown genotype and a homozygous “tester” done to determine whether the phenotypically dominant individual is homozygous or heterozygous for the relevant gene

Question 2

What is a mating between a phenotypically dominant individual of unknown genotype and a homozygous “tester” done to determine whether the phenotypically dominant individual is homozygous or heterozygous for the relevant gene?

Answer 2

testcross