7.3

Question 1

allele frequencies

Answer 1

number of times a certain allele occurs in a gene pool compared to the total number of alleles

Question 2

populations

Answer 2

localized groups of one species

Question 3

gene flow

Answer 3

introduction of outside alleles that increases variation

Question 4

hybridization

Answer 4

gene flow occurring between different but closely related species

Question 5

mutation

Answer 5

change in cell’s genetic material- only mutations in sex cells can be passed on

Question 6

sexual selection

Answer 6

individuals are selective in how they choose their mates- gene frequencies in a population become altered

Question 7

genetic drift

Answer 7

frequency of allele increases/decreases with in gene pool

Question 8

bottleneck effect

Answer 8

population reduced, result does not reflect genetics of original population

Question 9

founder effect

Answer 9

individuals isolated from larger population and new gene pool does not reflect original population