Genetics, populations, evolution and ecosystems - Evolution may lead to speciation

Question 1

State 2 factors which cause variation in phenotype

Question 2

What is discontinuous variation

Question 3

What is an example of discontinuous variation

Question 4

What factor influences discontinuous variation

Question 5

What is continuous variation

Question 6

What is an example of continuous variation

Question 7

What factor influences continuous variation

Question 8

Explain how natural selection allows the evolution of populations to occur

Question 9

What is stabilising selection

Question 10

Give an example of stabilising selection and explain why it occurs

Question 11

What is directional selection

Question 12

Give an example of directional selection and explain why it occurs

Question 13

What is disruptive selection

Question 14

Define gene pool

Question 15

Define speciation

Question 16

Describe how allopatric speciation can lead to the formation of a new species

Question 17

Describe how sympatric speciation can lead to the formation of a new species

Question 18

Describe how genetic drift occurs

Question 19

In what sort of population does genetic drift occur in