LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If below is the wild-type DNA sequence, which one shows a point mutation?5’-ATTCGC-3’
A
5’-AATTCGC-3’
B
5’-ATCCGC-3’
C
5’-ATCGC-3’
D
5’-ATTCGC-3’
Explanation: 

Detailed explanation-1: -A missense mutation results in a different amino acid being incorporated into the resulting polypeptide. The effect of a missense mutation depends on how chemically different the new amino acid is from the wild-type amino acid. The location of the changed amino acid within the protein also is important.

Detailed explanation-2: -Types of Point Mutations We are going to focus on the following point mutations: frameshift, silent, nonsense, and missense. Let’s start with a frameshift mutation, where there’s an insertion or deletion of one or more bases.

There is 1 question to complete.