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It greatly reduces the total population, which increases the effects of genetic drift on allele frequency.
In the next generation that trait increases in frequency above the frequency in the current generation.
Apex . . bottleneck
Allele frequency.
Evolution is the change in allele frequency over time in a population of organisms. Rats too!
An allele frequency measures how common certain alleles are in the population. "The distribution of alleles in a population" -Apex
An allele present in all members of a population
Allele frequency is stable The phenotype frequency does not change.
Different from what? Evolution is the change in allele frequency over time in a population of organisms. So, I repeat, what difference?
How often a certain allele (or trait) occurs in a certain population.
Yes, the ratios of genotypes for a specific trait can change if allele frequency changes.
A minor allele is the allele that has the least frequency among all the alleles in a given population and this has to be greater than 5%.