Types Of Selection

Question 1

What is directional selection?

Answer 1

Selection may favour individuals that vary in one direction from the mean of the population

Question 2

How does directional selection change the population?

Answer 2

Changes the characteristics of a population

Question 3

What is stabilising selection?

Answer 3

Favours average individuals

Question 4

What does stabilising selection do to the characteristics of the population?

Answer 4

Preserves characteristics

Question 5

Give an example of directional selection

Answer 5

Populations becoming immune to bacteria through vaccination while one strain becomes resistant to antibiotics

Question 6

Shorter ears and thicker fur in arctic foxes would be an example of what type of selection?

Answer 6

Anatomical

Question 7

Oxidising of fat rather than carbohydrate in kangaroo rats to produce water would be an example of what type of selection?

Answer 7

Physiological

Question 8

Swallows moving from UK to Africa to avoid winter would be an example of what type of selection?

Answer 8

Behavioural