Here are two differences between the back cross and the test cross:
- The back cross is a cross between an F1 hybrid and a homozygous recessive parent, while the test cross is a cross between an individual of an unknown genotype and a homozygous recessive parent.
- The purpose of a back cross is to verify the genotype of the F1 hybrid, while the purpose of a test cross is to determine the genotype of an individual of an unknown genotype.