Topic 8.2 Gene pools

Question 1

What are the similarities between stabilising selection and disruptive selection?

Answer 1

• both change the frequency of alleles/ genetic diversity

- both select against less well adapted phenotypes

Question 2

What are the differences between stabilising selection and disruptive selection?

Answer 2

• disruptive selection selects against middle/mean phenotypes but stabilising selects against extreme phenotypes
• disruptive selection leads to 2 distinct populations but stabilising selection maintains one population