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 1.0 1.0 0.5 0.5 0.75 0.75 0.25
The frequency of short offspring (pp) can be determined using Punnett square.
When a tall pea plant with one tall allele (Pp) is cross-pollinated with a short pea plant (pp), the possible genotypes of the offspring are:
1. Pp (tall)
2. pp (short)
Since the short phenotype results from two recessive alleles (pp), the frequency of short offspring can be determined by counting the number of possible pp genotypes and dividing it by the total number of possible genotypes.
In this case, out of the total of four possible genotypes (Pp, Pp, Pp, pp), only one genotype is pp.
Therefore, the frequency of short offspring (pp) is 1 out of 4, or 1/4, which is equivalent to 0.25.
So the correct answer is 0.25.