Evolution
change in allele frequencies over generations
evolution
favoring the average individual in a population
stabilizing
speciation caused by geographic separation
allopatric speciation
group with ancestor and all descendants
monophyletic group
P. rapae is more commonly known as
Cabbage white butterfly
mechanism that causes evolution by chance
genetic drift
A pattern that favors one extreme
directional changes
speciation without geographic separation
sympatric speciation
branching point on a tree
node
P. rapae's host plant family
Brassica/Brassicaceae
the only mechanism that produces adaptation
natural selection
pattern which favors both extremes
diversifying
chromosome doubling causing instant separation
polyploidy
most closely related species share this
most recent common ancestor
Wing spots help with this process
thermoregulation (will also select sexual selection)
genes move between populations
gene flow
selection for mating success
sexual selection
isolation before fertilization
prezygotic barrier
principle with the fewest evolutionary changes
maximum parsimony
wing angles are used for this
reflection basking
two effects of genetic drift
alleles lost, populations diverge
why peacocks have giant tails
males appear stronger when they are "showy"
type of barrier that is hybrid sterility
postzygotic barrier
group missing some descendants
paraphyletic group
butterfly family
lepidoptera