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)?(2 points) Responses 0.25 0.25 0.5 0.5 1.0 1.0 0.75
To solve this problem, we need to use Punnett squares to determine the possible genotypes of the offspring.
The tall pea plant with one tall allele (Pp) can produce two types of gametes: P and p.
The short pea plant (pp) can only produce one type of gamete: p.
Cross-pollinating these two plants would result in the following Punnett square:
| P | p |
_______|______|______|
P | PP | Pp |
_______|______|______|
p | Pp | pp |
_______|______|______|
From the Punnett square, we can see that there are two possible genotypes for the offspring: Pp and pp.
The frequency of short offspring (pp) is determined by the number of pp genotypes divided by the total number of possible genotypes.
Therefore, the frequency of short offspring is 1/4 or 0.25.