Dihybrid Crosses

Front

What is a dihybrid cross?

Back

A genetic cross that involves two traits, where each trait is represented by two alleles.

Front

What is the genotype for a pea plant heterozygous for round seeds (R) and homozygous recessive for green seeds (y)?

Back

Rryy

Front

In a dihybrid cross, how many traits are crossed?

Back

Two traits are crossed.

Front

What is the expected phenotype ratio for a dihybrid cross?

Back

9:3:3:1 ratio for dominant and recessive traits.

Front

What does the letter 'R' represent in pea plant genetics?

Back

Round seeds.

Front

What does the letter 'r' represent in pea plant genetics?

Back

Wrinkled seeds.

Front

What does the letter 'Y' represent in pea plant genetics?

Back

Yellow seeds.

Front

What does the letter 'y' represent in pea plant genetics?

Back

Green seeds.

Front

If two homozygous plants (RRYY x rryy) are crossed, what percent of the offspring will have Round and Yellow seeds?

Back

100%.

Front

What is the genotype of a white mouse with red eyes that is recessive for both traits?

Back

bbee.