Speciation

Question 1

Define speciation

Answer 1

The formation of a new species

Question 2

Name and explain the 2 different types of Speciation

Answer 2

1) Allopatric speciation. Speciation where there is geographical isolation.
2) Sympatric speciation. Speciation where there is not geographical isolation.

Question 3

What can result from Allopatric speciation? Give an example

Answer 3

Founder effect. Huntingtons disease in Afrikaans people

Question 4

What can result from Sympatric speciation? Give an example

Answer 4

Hybrid sterility and infertile offspring. 2 different species mating.

Question 5

Name different reproduction isolation mechanisms

Answer 5

1) Breeding At certain times
2) Species specific courtship behaviour
3) Adaptation to different pollenators

Question 6

Define inbreeding. Explain its effect

Answer 6

Mating between individuals too closely related. Increases Homozygosity

Question 7

Define outbreeding. Explain its effect

Answer 7

Mating between individuals who are distantly related. Promotes heterozygosity.