Chapter 24

Question 1

One species splits into two or more species

Answer 1

Speciation

Question 2

Broad pattern of evolution above species level

Answer 2

Macroevolution

Question 3

Group of populations whose members have the potential to interbreed in nature

Answer 3

Species

Question 4

Offsprings that result from an interpsecific mating

Answer 4

Hybrids

Question 5

Prevents fertilization

Answer 5

Prezygotic barrier

Question 6

Happens after zygote is formed

Answer 6

Postzygotic barrier

Question 7

Each species occupies a specific niche

Answer 7

Competitive exclusion principle

Question 8

Breed during different times, seasons, temperatures

Answer 8

Temporal isolation

Question 9

Courtship rituals are unique to a species

Answer 9

Behavioral isolation

Question 10

Mating is attempted but have morphological differences

Answer 10

Mechanical isolation

Question 11

Sperm of 1 species may not fertilize the other

Answer 11

Gametic isolation

Question 12

Genes may interfere with hybrid development

Answer 12

Reduced hybrid variability

Question 13

Hybrids are sterile

Answer 13

Reduced hybrid fertility

Question 14

May be fertile at first then offspring are sterile

Answer 14

Hybrid breakdown

Question 15

Population forms new species while geographically isolated

Answer 15

Allopatric

Question 16

Subset of a population forms without a geographic isolation

Answer 16

Sympatric

Question 17

Region in which members of different species meet and mate, producing offspring of mixed ancestry

Answer 17

Hybrid zones

Question 18

Long periods of no or little change in the species then sudden changes

Answer 18

Punctuated equilibria