genetic diversity

what’s genetic diversity?

the number of different alleles of genes in a population

what’s gene pool?

the total number of alleles in a population

what is evolution?

change in frequency of alleles over time in a population

what is natural selection?

differential survival and reproductive success of individuals due to differences in phenotypes

what’s a phenotype?

anatomy, behaviour, physiology, biochemistry → all influenced by genes

what does the hardy weinberg principle say?

the proportion of dominant and recessive alleles of any gene in a population will remain the same from one generation to the next provided certain conditions are met

what does natural selection do?

cause a change in the frequency of particular phenotypes and genotypes in a population, resulting in change in proportion of alleles.

what increases genetic diversity?

1. mutations

2. meisosis - creates new combinations of alleles

3. random fermentation of gametes

4. migration/gene flow