In pea plants, flowers are either white or purple; the purple color is produced by pigments called anthocyanins. The production of anthocyanins is a two-step process: the first is controlled by the C gene and the second by the P gene. Both genes must produce functional proteins for anthocyanin to be expressed. For each gene, the dominant (C and P) alleles produce functional proteins. You cross two pea plants, each with the genotype CcPp. What proportion of their offspring will have white flowers?

Question

Quizplus · Accepted Answer

The offspring will have white flowers if they have either cc or pp genotype. The probability of cc is 1/4, and the probability of pp is 1/4. The probability of either cc or pp (or both) is 1/4 + 1/4 - 1/16 = 7/16.

In Pea Plants, Flowers Are Either White or Purple; the Purple