4.4 - Genetic diversity and adaptation

Question 1

Suggest why the scientist took his sample from the population at random. (1)

Answer 1

• Avoids bias
• Results (likely to be) reliable/ repeatable

Question 2

Suggest and explain why the frequency of the ADF allele changed during the 45 generations. (4)

Answer 2

• Flies with ADF/allele have selective advantage
• So insects (with ADF more likely to) reproduce
• Pass on ADF (allele/gene)
• (So) allele frequency increases