Mendel invented the ____ cross to determine whether an individual with an unknown genotype was homozygous or heterozygous for a trait.
A)back
B)test
C)random
D)breeding

Question

Quizplus · Accepted Answer

Mendel used a test cross by mating an individual with an unknown genotype with a homozygous recessive individual to determine the unknown genotype. If all offspring show the dominant phenotype, the unknown genotype must be homozygous dominant. If there is a 1:1 ratio of dominant to recessive phenotype, the unknown genotype must be heterozygous.

Mendel Invented the ____ Cross to Determine Whether an Individual