Chapter 14

Question 0

Speciation

Answer 0

Occurs when one species evolves into two or more species

Question 1

Macroevolution

Answer 1

The major changes in the history of life, which are usually evident in the fossil record.

Question 2

Biological Species Concept

Answer 2

The definition of s species as a population or group of populations who’s members have the potential in nature to interbreed and produce fertile offspring

Question 3

Species

Answer 3

A group of populations whose members possess similar anatomical characteristic and have the ability to interbreed.

Question 4

Reproductive barrier

Answer 4

Anything that prevents individuals of closely related species from interbreeding

Question 5

Pre-zygotic barriers

Answer 5

Prevent mating or fertilization between species

Question 6

Allopatric speciation

Answer 6

The initial block to gene flow is a geographic barrier that physically isolates the splinter population

Question 7

Speciation

Answer 7

The origin of a new species without geographic isolation

Question 8

Punctuated equilibria

Answer 8

Described these longs periods of little change, or equilibrium, punctuated by abrupt episodes of speciation