1.7 Evolution

Question 1

What is stabilising selection?

Answer 1

Stabilising selection is when an average phenotype is selected for and the extremes of the phenotype are selected against

Question 2

What is directional selection?

Answer 2

Directional selection is where one extreme of the phenotype range is selected for

Question 3

What is disruptive selection?

Answer 3

Disruptive selection is where two or more phenotypes are selected for

Question 4

What is horizontal gene transfer?

Answer 4

Horizontal gene transfer is where genes are transferred between individuals in the same generation

Question 5

What is vertical gene transfer?

Answer 5

Vertical gene transfer is where genes are transferred from parent to offspring as a result of sexual or asexual production

Question 6

What is a species?

Answer 6

A species is a group of organisms capable of interbreeding to produce fertile offspring which does not normally breed with other groups