Question: Rays disease is caused by a loss-of-function mutation in a gene on chromosome 20 that encodes a h…

Rays disease is caused by a loss-of-function mutation in a gene
on chromosome 20 that encodes a hydrolysis enzyme. Only individuals
who are recessive for the gene will inherit Rays disease. Among the
individuals on Fanning Island in the Republic of Kiribati, about 1
in 2800 children are born with the disease. What fraction of the
individuals in this population are carriers of this disease,
assuming the population is in Hardy-Weinberg equilibrium?