Lecture 8 - Analysis Of Genetic Variation In Population II Flashcards
(17 cards)
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
