According to the Hardy-Weinberg principle, the allele frequency of a population remains constant. How do you interpret the change of frequency of alleles in a population?

OR

Coelacanth was caught in South Africa. State the significance of discovery of Coelacanth in the evolutionary history of vertebrates.

• When different frequency measurements observed from expected values that difference (direction) indicates the extent of evolutionary change.

• Disturbance in genetic equilibrium (Hardy- Weinberg equilibrium) is the change of frequency of alleles in a population that would then be interpreted as resulting in evolution.

OR

A fish caught in South Africa happened to be a Coelacanth which was thought to be extinct. These animals called lobefins evolved into the first amphibians which lived on both land and water. These were ancestors of modern day frogs and salamanders.