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7.2 Populations
7.2.2 Gene Pools & Allele Frequency
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Nya Mills
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Gene Pool
= a collection of genes within an
interbreeding
population at a particular time
Allele frequency
= the
proportion
of individuals with a given
allele
in a
gene pool
Gene Pool and Allele frequencies in a species population can change over time due to
natural selection
Overtime changes to the
gene pool
/
allele frequency
overtime, a new
species
can form
Phenotype frequency
= (total individuals with
phenotype
÷ total individuals in
population
) ×
100