CH 19: The Evolution Of Populations

Question 1

Allele frequency

Answer 1

(Also, gene frequency) Rate at which a specific allele appears within a population

Question 2

Founder effect

Answer 2

Event that initiates allele frequency change in part of the population, which is not typical of the original population

Question 3

Gene flow

Answer 3

Flow of alleles in and out of a population due to the individual or gamete migration

Question 4

Gene pool

Answer 4

All the alleles in and out of a population due to the individual or gamete migration

Question 5

Genetic drift

Answer 5

Chance event that decreases the variability of genes

Question 6

Macroevolution

Answer 6

Broader scale evolutionary changes that scientists see over paleontological time

Question 7

Microevolution

Answer 7

Change in allele frequency from generation to generation

Question 8

Adaptive evolution

Answer 8

Increase in frequency of beneficial alleles and decrease in deleterious alleles due to selection (making the genes better)

Question 9

Gene flow

Answer 9

Migration introducing new genes

Question 10

Mutation

Answer 10

Random changes in alleles