With the following question I will show you how to successfully calculate allele frequencies from a gene pool-

Q1) The gene pool for a population of bears consist or 750 alleles. 450 are dominant alleles for black coat color (A) and 300 are recessive alleles for brown coat color (a)

A) A - 450/750 = .6 = 60% - dominant alleles
a- 300/750 = .4 = 40% -recessive alleles

Q2) The following table indicates the distribution of genotypes in the offspring of this population, use this information to calculate allele frequencies.
Homozygous dominated: 35
Heterozygous: 60 35+60+50=145
Homozygous recessive: 50

A) Homozygous dominated = 2(35) +60 = .45 = 45%
145x2
Homozygous recessive = 2(50)+60 = .55 = 55%
145x2
.45 +.55=1
45 + 55 =100




3248538-the-asiatic-black-bear-ursus-thibetanus-selenarctos-thibetanus--also-known-as-the-tibetan-black-bear.jpg7980449-brown-bear-8-years-old-walking-in-front-of-white-background.jpg




Significance

Calculating allele frequencies are important because it is what one needs in order to calculate the genetic diversity for an individual, a population, and a species. Without being able to calculate allele frequencies, we would not be able to know if evolution is occurring as evolution includes a change in the frequency of alleles in a population over time. When allele frequencies change and are not in equilibrium, we can expect evolution.