Chapter 20, Problem 31P

Albinism, an autosomal recessive trait characterized by an absence of skin pigmentation, is found in $1$ in $4000$ people in populations at equilibrium. Brachydactyly, an autosomal dominant trait producing shortened fingers and toes, is found in $1$ in $6000$ people in populations at equilibrium. For each of these traits, calculate the frequency of

a. the recessive allele at the locus

b. the dominant allele at the locus

c. heterozygotes in the population

d. For albinism only, what is the frequency of mating between heterozygotes?