In an experiment with pea plants two purple flowered that are heterozygous for the alleles flower color crossed The results offspring flowers 25 w?

In an experiment with pea plants, two purple-flowered plants that are heterozygous for the alleles of flower color are crossed. The results show that 25% of the offspring flowers are white. This is consistent with the expected Mendelian ratio for a monohybrid cross involving a dominant allele (purple) and a recessive allele (white).

The parental plants are both heterozygous for the flower color allele, meaning that they each carry one copy of the dominant allele (P) and one copy of the recessive allele (p). When these plants are crossed, the possible offspring genotypes are PP, Pp, and pp.

The PP offspring will have purple flowers, as they have two copies of the dominant allele. The Pp offspring will also have purple flowers, as the dominant allele is expressed even when the recessive allele is present. However, the pp offspring will have white flowers, as they have two copies of the recessive allele.

The expected phenotypic ratio for this cross is therefore 3 purple flowers : 1 white flower. This is what is observed in the experiment, as 25% of the offspring flowers are white.