In pea plants, the trait for purple flowers (p) is dominant over the trait for white flowers (p). If two heterozygous purple plants are crossed, what percentage of the offspring would be expected to have the same phenotype as the parents? (1 point)

Question

In pea plants, the trait for purple flowers (p) is dominant over the trait for white flowers (p). If two heterozygous purple plants are crossed, what percentage of the offspring would be expected to have the same phenotype as the parents? (1 point)

A.) 25% (1/4)

B.) 75% (3/4)

C.) 50% (2/4)

D.) 100% (4/4)

Answer 1

The correct answer is C.) 50% (2/4).

In a cross between two heterozygous purple plants (Pp x Pp), there are four possible combinations of alleles in the offspring: PP, Pp, Pp, and pp.

Out of these four combinations, two have the same phenotype as the parents, which is purple flowers (PP and Pp). So, the percentage of offspring with the same phenotype as the parents is 2 out of 4, or 50%.