AP BIOLOGY

Detailed explanation-1: -Allele frequency refers to how common an allele is in a population. It is determined by counting how many times the allele appears in the population then dividing by the total number of copies of the gene. The gene pool of a population consists of all the copies of all the genes in that population.

Detailed explanation-2: -The allele frequency represents the incidence of a gene variant in a population. Alleles are variant forms of a gene that are located at the same position, or genetic locus, on a chromosome.

Detailed explanation-3: -The total number of alleles = the total number of individuals x2. In the small population, there are 2 BB genotypes and 2 Bb genotypes, so 2x2 + 2 = 6 B alleles. There are 5 individuals, so 2x5=10 alleles in total.

Detailed explanation-4: -(uh-LEEL) One of two or more DNA sequences occurring at a particular gene locus. Typically one allele (“normal” DNA sequence) is common, and other alleles (mutations) are rare.

Detailed explanation-5: -The frequency of an allele in the population is a fundamental quantity in human statistical genetics. This quantity forms the basis of many population and medical genetic studies. Many evolutionary forces change allele frequencies. Consequently, allele frequencies can be used to infer past evolutionary events.