Suppose Three Sibling Species of Frogs Have the Following DNA

Multiple Choice

Suppose three sibling species of frogs have the following DNA sequences at a portion of a gene: Species 1: AGTCTAGATCGCGGTCG
Species 2: AGTCGATCGCGGACG
Species 3: TGTCTAGATCACGGTCG
Recall that the observed number of mutations can differ from the total number of actual substitutions that occurred in pairwise sequence comparisons.Which modification would align the three sequences so they could be used to make comparisons?

A) Add a gap representing one nucleotide to Species 3 at the first nucleotide position.
B) Add a gap representing one nucleotide to Species 2 at the fifth nucleotide position.
C) Add a gap representing two nucleotides to Species 2 at the fifth nucleotide position.
D) Add a gap representing two nucleotides to Species 2 at the sixteenth nucleotide position.
E) None; no modification is needed.