Biology 171 Final Exam pt 2

Sexual Selection

Process by which individuals that possess certain heritable traits are more successful at attracting and obtaining mates

Anisogamy

gametes of different sizes

Intrasexual selection

competition within a single sex for mates. ex. male-male competition

Intersexual Selection

one sex chooses mates based on certain traits. ex. female mate choice

Sexual Dimorphism

differences between sexes in traits often related to attracting and obtaining mates.

Allele Frequency

proportion of a specific allele of a gene in a population of organisms

Genetic Drift

changes in allele frequencies due to random sampling. It happens by chance

Gene Flow

movement of genetic material from one population to another

Founder Effect

a form of genetic drift where a new population is established. This leads to a loss in genetic variability

The Modern Synthesis

defines biological evolution as a change in allele frequencies in a population over one or more generations

Population Genetics

study of genetic variation within/among a population. And the evolution processes that generate and maintain this variation

Gene Pool

all the alleles for all gene in the population

Inbreeding

mating of individuals who are closely related or self-fertilization. Over several generation it will increase proportion of homozygous offspring

Hardy Weinberg Equilibrium

Allele frequencies in a population will remain stable.