Lecture 8 - Analysis Of Genetic Variation In Population II Flashcards
Gene Flow Definition
Movement of individuals and associated genetic material between populations
Gene Flow Features
Natural Consequence of Mating
Spread of favourable/lethal mutations
Exogamy Definition
Marriage outside of cultural group
Endogamy Definition
Marriage inside of cultural group
Genetic Drift Definition
Change of gene frequency in a population due to chance
Smaller the population, the more noticeable the effects of drift
Fixation Definition
100% Frequency of an allele
Founder Effect Definition
Reduced genetic diversity due to small founding population
Bottleneck Effect
When individuals found a population and carry a sample of genetic variation into said population
Positive Assortative Mating Definition
Individuals mating only with similar genotypes
Results in a decrease in heterozygosity
Differential Reproduction Definition
Reproduction between individuals who are best able to survive
Selection Definition
Process of certain genes becoming more prevalent in a population
Fitness Definition
Ability to survive and produce offspring
1.0 = 100% of individuals with a particular pheontype pass on 100% of their genes
Co-dominant Definition
Where two alleles are expressed separately to yield one phenotype
Additive Definition
Genes that code for the same trait
Darwinian Fitness Definition
Average Number of offspring from a genotype
Relative Fitness (w) Definition
Fitness in relation to most fit genotype
Heterosis Definition
Process for selection to maintain equilibrium with polymorphism
