NEET · Biology · Types of Natural Selection

Exercise and reference answers

Matching pairs

1. A

   Stabilising selection

   B

   Favours mean phenotype; reduces variation

2. A

   Directional selection

   B

   Shifts the mean toward one extreme

3. A

   Disruptive selection

   B

   Favours both extremes, splits population

4. A

   Hardy-Weinberg condition

   B

   Allele frequencies stay constant

5. A

   Founder effect

   B

   Allele drift in a small offshoot group

6. A

   Bottleneck effect

   B

   Sharp loss of diversity after a crash

Instructions

Match each evolutionary mechanism to its description.