BSC2010 Exam 3 Evolution

adding terms from the adaptive as we go

Frequency dependent selection

Natural selection

Genetic Drift

;extra potent when populations go through extreme events where only a small number survive

Founder Effect

Gene Flow

_____________ describes a model in which allele frequencies _____________ across generations and genotype frequencies can be predicted from allele frequencies.

Hardy Weinberg equilibrium; do not change

_____________ acts to reduce variation without changing the mean value of a trait.

stabilizing selection

directional selection

;the result of evolutionary trends

disruptive selection

positive selection

artificial selection

sexual selection

purifying selection

non random mating

ie. bright colors, courtship, size

heterozygous advantage

evolution

changes in genetic composition of biological populations over time

clinal variation

polymorphism

qualitative

traits that are caused by many loci and factors, ie body height

quantitative

traits that aren’t caused by as many loci, ie. color, pea shape