Population Genetics Flashcards
species definition
discrete system of populations with a common evolution
population
group of animals from 1 species which interbreed
gene pool
set of genes & alleles in entire population
Breed
population distinguishable from another of the same species
population genetics
allele frequencies of a population of animals
fixed genes
all animals are homozygous for same allele
q^2 vs q
q^2: frequency of autosomal recessive homozygotes
q: frequency of recessive allele
homozygotes increase ( ) with gene frequency
exponentially
synder’s ratios are based on ( )
phenotypes
what are synder’s ratios used to determine?
proportion of recessive/dominant offspring per parental mating type
Genetic drift
small subpopulations become increasingly different over generations through a specific gene
founder effect
founding small population is derived from a larger population
population bottleneck
population is severely reduced in numbers or 1 or more generations
domestic animal breeders vs preservationists
domestic- want genetic change
preservationists- want no change
positive mating
both mates have the same trait
