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)
Responses
0.25
0.25
0.5
0.5
0.75
0.75
1.0
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.