Question

What is the purpose of a testcross?

To determine if a parent has a lethal allele.

To determine the genotype of offspring from a cross.

To determine is a trait is inherited.

To determine the genotype of a parent with an unknown phenotype.

Answer 1

A test cross is a way to explore the genotpye of an organism. Early use of the test cross was as an experimental mating test used to determine what alleles are present in the genotype.