Chapter 4 Flashcards
Population
Cluster of individuals of same species who share common geographic area and find mates within their own cluster
Gene pool
All genetic variation in a population
4 Core Methods of Evolution
1) mutation- create new variables
2) gene flow
3) genetic drift
4) natural selection
Frequency
% of individuals in the population with a given allele
Mutations
Changes to nucleotide sequence
Gene flow
Movement of alleles within and between populations
- affected by
1) migration
2) nonrandom mating
Inbreeding
Mating among close genetic relatives
-type of nonrandom mating
Assortative mating
Mate selection based on similarity or differences in traits
Genetic Drift
Random changes in allele frequencies across generations
Founder Effect
Evolutionary process in which a small group of individuals account for all genetic variation in a large population
Bottleneck
Dramatic reduction in the size of a population such that genetic diversity of a population is lessened
Exaptation
Trait that is currently serving function other than for which it originally arose
Epigenetic System
The factors in the body that work in combo with genes and proteins to affect genotype
Behavioral inheritance system
System of imitation and learning by which behavior passes generation to generation
Developmental Systems Theory
Includes development of biological and behavioral systems asa core part of evolutionary processes
