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21 Cards in this Set

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hardy-weinberg equilibrium
for any two alleles (Aa), let p and q represent the frequency of those alleles (so p squared=AA and q squared=aa and 2pq=2Aa
if all three possible genotypes mate with one another, in the next generation the frequencies will be equal to p squared + 2pq + q squared=1
gene frequency
ch
population genetics
fh
gene flow
dsfg
immigration
rfg
emigration
sgk
inbreeding
drkg
monogamy
sdg
serial monogamy
dfg
polygamy
dgh
polygyny
gh
polyandry
serdg
founder effect
shows that chance events can affect gene frequencies in unexpected ways
genetic drift
change in allele frequencies in small isolated populations due to random events
isolating mechanism
any factor that acts to reduce or block the flow of genes between two populations
reproductive isolating mechanism
temporal, mechanical, behavioral, ecological
temporal isolating mechanism
population becomes isolated in time
behavioral isolating mechanism
changes in behavior, especially courtship and mating behavior
mechanical isolating mechanism
the parts no longer fit together; could be extreme difference in size, change in shape of genitalia, most in plants
ecological isolating mechanism
dont meet, dont mate; species that have ecological races - specialized to live in a particular habitat
species
sfg