terms for exam 2-biology

Question 1

Industrial _____:
Selection_ changed when industrial pollution killed liches on trees.
The primary selective agent on moths is predation by visually guided birds.
The frequency of the dark form of the moth is ___near industrial areas.
The dark moths did occur in nature____industrial pollution killed the lichens on the trees.

Answer 1

Melanism, pressure, guided, highest, before

Question 2

when counting alleles you count twice, because one has 2 alleles

Question 3

hardy-Weinburg expectations: no mutations, random mating, no gene flow, big population size

Question 4

gene flow

Answer 4

transfer of genes from one generation to the other,

Question 5

directional selection

Question 6

stabilizing selection

Question 7

disruptive selection

Question 8

epistatic

Answer 8

is a circumstance where the expression of one gene is modified (e.g., masked, inhibited or suppressed) by the expression of one or more other genes

Question 9

sickle cell anemia