Question

Which one of the following genetic ratios will be obtained in a dihybrid test cross:

Options

• 9 : 3 : 3 : 1

• 1 : 1 : 1 : 1

• 1 : 2 : 2 : 1

• 7 : 1 : 1 : 7

Answer 1

1 : 1 : 1 : 1

Explanation:

The ratio of the dihybrid F1 plants to the homozygous recessive parent in the dihybrid test cross is 1 : 1 : 1 : 1.