Ch 23, 24, and 25 Evolution, Species, History of life

Question 1

Microevolution

Answer 1

evolution on its smallest scale

Question 2

Genetic Variation

Answer 2

Differences among individuals in the make up of their genes/DNA segments

Question 3

Hardy Weinberg Equilibrium

Answer 3

alleles and phenotype remain the same in a population from generation to generation-gene pool

Question 4

Population

Answer 4

group of individuals of same species that live in same area and interbreed

Question 5

Genetic Drift

Answer 5

change fluctuations in allele frequencies over generations tend to reduce genetic variation

Question 6

Sexual Selection

Answer 6

sex characteristics that give individuals advantages in mating (bird)

Question 7

Biological Species Concept

Answer 7

reproductive isolation through prezygotic and postzygotic barriers that separate gene pools

Question 8

Allopatric Speciation

Answer 8

gene flow is reduced when two populations of one species is separated

Question 9

Sympatric Speciation

Answer 9

new species originates while remaining in the same geographic area as parent species

Question 10

Conditions of early Earth made what possible?

Answer 10

Origin of life