Question

Define the terms:
i. Genetic drift

Hint:

Genetic drift and homologous organs are fundamental concepts in evolution, showing how random events and evolutionary history shape organisms.

Answer 1

Step 1: Understanding Genetic Drift.
Genetic drift refers to the random changes in allele frequencies in a population due to chance events. It is more prominent in smaller populations.
Step 2: Conclusion.
Genetic drift can lead to the loss or fixation of alleles in a population without the influence of natural selection.
ii. Homologous organs
Solution:
Step 1: Understanding Homologous Organs.
Homologous organs are those that have a similar structure but may perform different functions. They arise from a common evolutionary origin. Examples include the forelimbs of humans, bats, and whales.
Step 2: Conclusion.
Homologous organs provide evidence for common ancestry and divergent evolution.