In eastern gray squirrels, sciurus carolinensis, the allele for black fur (b) is dominant to the allele for gray fur (b). in a particular population of gray squirrels, 64% have black fur and 36% have gray fur. a researcher calculated the allelic frequencies to be b=0.4 and b=0.6. five years later, the researcher returned to the location and determined the allelic frequencies within the squirrel population to be b=0.6 and b=0.4.