Evolution-speciation

Question 1

A species is a

Answer 1

Group of organisms which can interbreed and produce fertile offspring, and which do not normally breed with other groups.

Question 2

What are isolation barriers important for

Answer 2

In preventing gene flow between sub populations during speciation

Question 3

Geographical isolation barrier

Answer 3

Leads to allopatric speciation.

Question 4

Behavioural or ecological barriers lead to?

Answer 4

sympatric speciation

Question 5

Why is sympatric speciation far less common than allopatric speciation

Answer 5

It would require a very strong, localised selective pressure to completely interrupt gene flow between the two populations.

Question 6

What is speciation

Answer 6

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