Biology: Concepts and Investigations 2nd Edition by Mariëlle Hoefnagels

Exercise 22

Fraggles are mythical, mouselike creatures that live underground beneath a large vegetable garden. Of the 100 Fraggles in this population, 84 have green fur, and 16 have gray fur. A dominant allele F confers green fur, and a recessive allele f confers gray fur. Assuming Hardy-Weinberg equilibrium is operating, answer the following questions. (a) What is the frequency of the gray allele f ? (b) What is the frequency of the green allele F ? (c) How many Fraggles are heterozygotes (Ff) ? (d) How many Fraggles are homozygous recessive (ff) ? (e) How many Fraggles are homozygous dominant (FF) ?