7. Evolution - Speciation Flashcards
1
Q
What is a biological species?
A
A group of organisms capable of interbreeding and producing fertile offspring
2
Q
What is speciation?
A
The generation of new biological species by evolution as a result of isolation, mutation and selection
3
Q
What are geographical barriers and what type of speciation are they important in?
A
They are when a population is split by sea/river/mountain into two separate ranges then evolves into two new species. They are important in allopatric speciation
4
Q
What are behavioural or ecological barriers and what type of speciation are they important in?
A
They are when one population evolves into two species despite living in the same range
5
Q
What are hybrid zones?
A
Where the ranges of two closely related species meet
