E VOLUTION

T ERMS TO KNOW Population Members of the same species living in the same area Genome Genetic make-up of an organism (DNA) Allele A variation of a particular gene Ex. tongue rollers vs non-tongue rollers Ex. Eye colour: blue, brown, green, etc.

T ERMS TO K NOW Gene Pool Ratio of all the alleles of all of the genes in the gene pool of members of a species living in a particular area Can be used to show the genetic make-up of a species Genotype Genetic make-up (AKA genes) Phenotype Physical characteristics

T HE ROLE OF DNA IN E VOLUTION Genetic make-up of a species depends on the activities of the members of the species Ex. Reproduction and death Evolution: Change in the genetics of a species When there is a change in the ratio of genes in the gene pool

A GENTS OF E VOLUTION 1. Natural Selection 2. Artificial Selection 3. Mutation 4. Genetic Drift 5. Gene Flow

N ATURAL S ELECTION C_M