Question

In a mutational event, when adenine is replaced by guanine, it is the case of

• A. transversion
• B. frameshif mutation
• C. transcription
• D. transition

Answer 1

Answer: (D)

In the case of transition, purine base is replaced by another purine (i.e., $A-G$ ) and pyrimidine is replaced by another pyrimidine (i.e., $C-T$) and vice versa. In the case of transversion, purine is replaced by a pyrimidine and vice-versa. The frameshift mutation is the mutation of bases in DNA sequence that changes the way of reading the sequences. Transcription is the process of formation of mRNA from DNA.