If purple skin - P is dominant to red skin - p. What is the genotype for someone with red skin? *

50-60% chance of being a darker skin tone, in this case Purple (P).

And red skin would be: 40-50%

Explained:

The Genotype is the genes of an organism. A capital letter represents the dominant form of a gene ( P is a cap so it is dominant) , and a lowercase letter is the abbreviation for the recessive form of the gene (less dominant).

So darker skins have dominant traits. So

50-60% chance of being a darker skin tone, in this case Purple (P).

And red skin would be: 40-50%

the answer to your question is b