Question

Mutations altering nucleotide sequence within a gene are

• A. Frame shift mutations
• B. Base pair substitution
• C. Both A and B
• D. None of the above

Answer 1

The correct option is A Frame shift mutations

• A frame shift mutation is a genetic mutation caused by a deletion or insertion in a DNA sequence that shifts the way the sequence is read.
• A substitution is a mutation that exchanges one base for another (i.e., a change in a single "chemical letter" such as switching an A to a G) is called base pair substitution.

So, the correct answer is 'Frame shift mutations'.