Question

when does a geneticist need to carry a test cross,​

Answer 1

Answer:

Test crosses are used to test an individual's genotype by crossing it with an individual of a known genotype. Individuals that show the recessive phenotype are known to have a homozygous recessive genotype. Individuals that show the dominant phenotype, however, may either be homozygous dominant heterozygous.

it definitely helps you