Question

The genotype of a plant showing the dominant phenotype can be determined by ______.

Options

• Test cross

• Dihybrid cross

• Pedigree analysis

• Back cross

Answer 1

The genotype of a plant showing the dominant phenotype can be determined by test cross.

Explanation:

Greg Johann Mendel was the first to use a test cross in genetics. It is used to determine if an individual with a dominant phenotype is homozygous or heterozygous for that characteristic. To put it another way, test cross determines a person’s genotype.