Question

You are comparing two samples of the octopus genome, one from an octopus that can make ink (sample 1), and one from an Octopus that can’t make ink (sample 2). You notice the one who can’t make ink has a mutation. Sample 1: ATTACAGTACTGGCA Sample 2: ATTACAATACTGGCA
Looking at the sequences carefully you determine it is a __________ mutation.
A. Insertion
B. Deletion
C. Substitution
D. Inversion

Answer 1

The mutation is the modification or change in the nucleotide bases of the genetic material. From the sequence of the octopus, it can be said that it is a substitution mutation. Thus, option C is correct.

What is a substitution mutation?

A substitution mutation is the type of mutation where the single nucleotide base is substituted with another base like in sample 2 of the octopus incapable of producing ink, the base G is substituted by base A.

It is not an insertion mutation as no new base is added nor it is a deletion as no base was removed from the original sequence. It also is not an inversion mutation as no two bases have switched their places.

Therefore, it is a substitution mutation.

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