In 1775, a catastrophic typhoon swept through Pingelap Island, killing 90% of th
ID: 49288 • Letter: I
Question
In 1775, a catastrophic typhoon swept through Pingelap Island, killing 90% of the inhabitants and leaving only approximately 20 people. It is believed that one of the survivors was a carrier forcomplete achromatopsia, a recessive genetic disorder which causes total color-blindness in sufferers. Based on this information, what was the value for q (representing the frequency of the recessive allele that causes achromatopsia) in 1775? (Genotype frequency formula: p2 + 2pq + q2 = 1, Allele frequency formula: p + q = 1)
Explanation / Answer
the value of q is 0.027.