3.2.7

Question 1

What can cause isolation of population?

Answer 1

Environmental changes such as mountain formation, changes in rivers, sea level change, climatic change, and plate movements can cause isolation of populations.

Question 2

Define tectonic plates

Answer 2

Tectonic plates are the divisions of the Earth’s surface that have moved throughout geological time.

Question 3

What inner animal factors cause isolation in a population?

Answer 3

Behavioral factors (such as reproductive displays or daily activity), genetic factors (such as inability to produce fertile offspring due to genetic differences), and reproductive factors (such as anatomical differences in reproductive organs).

Question 4

What are the 3 basic types of speciation?

Answer 4

Allopatric speciation, sympatric speciation, and parapatric speciation

Question 5

Define allopatric speciation

Answer 5

Allopatric speciation occurs when a species separates into two separate groups which are isolated from one another by a physical barrier, such as a mountain range or a waterway.

Question 6

Define sympatric speciation

Answer 6

Sympatric speciation occurs when a new species develops spontaneously in a group of organisms that are not physically separated from one another.

Question 7

Define parapatric speciation

Answer 7

Parapatric speciation occurs when a species is spread out over a large geographic area, and individuals only mate with those in their own geographic region.