Ch 19.1

Question 1

Natural selection acts to promote __________

Answer 1

Traits that increase fitness

Question 2

Change in population over time is_________

Answer 2

microevolution

Question 3

Microevolution

Answer 3

theory that connects population change over time

Question 4

Macroevolution

Answer 4

Process that gives rise to new species and higher taxonomic groups with widely divergent characteristics

Question 5

Allele frequency

Answer 5

the rate at which a specific allele appears in the population

Question 6

Change in alleles frequency in a population

Answer 6

Evolution

Question 7

Gene pool

Answer 7

Sum total of all alleles in a population

Question 8

Genetic drift

Answer 8

random change in allele frequencies in a population

Question 9

_______ occurs together with natural selection

Answer 9

genetic drift

Question 10

Founder effect

Answer 10

an event that initiates an allele frequency change in an isolated part of the population, not typically of the original population

Question 11

Hardy-Weinberg Principle of Equilibrium assumptions

Answer 11

1. Population infinitely large
2. no mutations
3. random mating
4. no gene flow

Question 12

A populations alleles and genotype frequencies are inherently _______ unless _______

Answer 12

stable; some kind of evolutionary force is acting on the population

Question 13

If allele/genotype frequencies differ from expected then ______

Answer 13

the population is evolving