Question

a strand of dna reads taaccgttg. below are mutated strands of this dna. which of the following is an insertion? a taacccttg b taccgttg c ttaaccgttgg

Explanation:

An insertion mutation adds one or more nucleotides to the DNA sequence. Original sequence is TAACCGTTG. Option A has a substitution (C instead of G). Option B has a deletion (missing nucleotides). Option C has an extra 'T' at the start, which is an insertion.

Answer:

C. TT AACCGTTGG