Question

When a purine is replaced by a pyrimidine in base-pair substitution process the phenomenon is termed as ______.

विकल्प

• transition

• transversion

• frameshift mutation

• tautomerisation

Answer 1

When a purine is replaced by a pyrimidine in base-pair substitution process the phenomenon is termed as transversion.

Explanation:

When a purine (adenine or guanine) is replaced by a pyrimidine (cytosine or thymine) or vice versa in a base-pair substitution mutation, this type of mutation is called a transversion. In contrast, a transition mutation occurs when a purine is replaced by another purine or a pyrimidine is replaced by another pyrimidine. Transversions can cause more significant changes in the DNA sequence and potentially lead to more pronounced effects on the organism's phenotype.