Assertion : Comparative biochemistry provides a strong evidence in favour of common ancestry of living beings.
Reason : Genetic code is universal.

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

B

Explanation

The most convincing evidence of descent from a common ancestor comes from the similarities in the biochemical composition are:
* Enzymes and hormone – Trypsin the protein splitting enzyme is found in animals from protozoa to mammals and amylase from sponges to man.
* Chromosome: The chemical composition of DNA is basically the same in all living being except for difference in sequence of nitrogenous bases.
* Genetic code: It is triplet and universal from virus to man.