SPECIATION

Question 1

Speciation

Answer 1

Speciation is the generation of new biological species by
evolution as a result of isolation, mutation and selection

Question 2

Importance of isolation barriers

Answer 2

The importance of isolation barriers in preventing gene flow between sub-populations during speciation

Question 3

Species

Answer 3

A species is a group of organisms capable of interbreeding and producing fertile offspring, and which does not normally breed with other groups

Question 4

Allopatric speciation

Answer 4

Gene flow between 2 (or more) populations is prevented by a geographical barrier

Question 5

Sympatric speciation

Answer 5

2 (or more) populations live in close proximity to one another in the same environment, yet they become genetically isolated = because of gene flow between them is prevented by the presence of behaviour or ecological barriers

Question 6

when it occurs

Answer 6

occurs when circumstances arise that prevent gene flow between 2 populations causing their gene pools to diverge