Natural Selection Process

Question 1

1

Answer 1

Mutation causes genetic variation
A random mutation introduces a new allele, which may result in a beneficial characteristic.

Question 2

2

Answer 2

Selection pressure acts on the population
An environmental factor (e.g., predator, disease, climate) creates a selection pressure, meaning not all individuals survive equally.

Question 3

3

Answer 3

Individuals with advantageous alleles survive and reproduce
Those with the beneficial mutation are more likely to survive, reproduce, and pass on the advantageous allele.

Question 4

4

Answer 4

Favourable allele increases in frequency
Over generations, the frequency of the advantageous allele increases in the population — leading to evolution.