A tall pea plant results from a dominant tall allele while the short phenotype results from two recessive alleles. What is the frequency of short offspring (pp) when a tall pea plant with one tall allele (Pp)is cross pollinated with a short pea plant (pp)?(1 point)

Question

Responses

0.25
0.25

0.5
0.5

0.75
0.75

1.0

Answer 1

The frequency of short offspring (pp) can be determined using a Punnett square.

In this case, the tall pea plant (Pp) is crossed with a short pea plant (pp).

The possible genotypes of the offspring are:

Pp (tall)
Pp (tall)
pp (short)
pp (short)

Since only one of the four possible genotypes is pp (short), the frequency of short offspring is 1 out of 4, which is equivalent to 0.25 or 25%.

So the correct answer is 0.25.