- Define the set of alleles for particular gene within a population.

Allele Frequencies

- The frequency of an allele within a gene pool is the number of copies of that allele divided by the total number of alleles in the population.

- For example, If there are 100 copies of a gene in the population, and 20 of those are copies of the A allele and 80 are copies of the a allele, then allele frequency for A is 0.2.

- Allele frequencies can change over time due to several factors, including mutation, gene flow, natural selection, genetic drift, and non-random mating.

Mutation:

- Creates new alleles within the gene pool.

Gene Flow:

- Occurs when individuals enter or leave a population, bringing new alleles with them or taking alleles away.

Natural Selection:

- Favors the survival and reproduction of individuals with certain alleles, causing those alleles to become more common in the population over time.

Genetic Drift:

- Random changes in allele frequencies that can occur due to sampling error when few individuals are involved in reproduction.

Non-Random Mating:

- Occurs when individuals mate with each other based on specific traits or preferences.

Gene pools are essential in understanding the genetic diversity and evolution of population because, they provide information about:

- The genetic variation present within the population.

- The potential for evolution and adaptation to changing environmental conditions.

- The impact of various evolutionary processes on the genetic makeup of population over time.