pop genetics Flashcards
Gene pool
a collection of alleles present in a population
Hardy-Weinberg Assumptions
large pop, random mating, no mutations, no migration, no natural selection
How to find alleleic frequencies
p+q=1
What does it mean if a population is in Hardy-Weinberg equilibrium?
no evolution :(
Mendelian population
a group of interbreeding, sexually reproducing individuals that have a common set of genes
pool
a collection of gametes
evolution
changes in allele frequency over time
allele frequency for dominant alleles
(number of A alleles)/N
allele frequency for a recessive allele
(number of a alleles)/ N
population
any group of members of the same species in a given geographical area capable of mating and producing fertile offspring
Genetic variation in a population affects its potential to…
adapt to environmental change
The probability of any given allele is based on how abundant or rare it is in the population (what is this called)
its frequency (in the pop)
genetic drift
allele frequency changes resulting from chance events
What are the effects of genetic drift on population
produces changes in allele frequencies; reduces genetic variation
Founder Effect
the establishment of a population by a small number of individuals
