Amutation changes the dna sequence aagcctggcaat to the new sequence aagcctgcgcaat. what kind of mutation has occurred? a. deletion b. insertion c. duplication d. substitution

The correct answer is B. Insertion

Explanation:

In genetics, a mutation refers to a change or alteration in the nucleotide sequence in the DNA of an organism, this implies the order of nucleotides included in a sequence that is composed of nucleotides of  Adenine (A), Guanine (G), cytosine (C) and thymine (T) change. In the case presented this occurs as one cytosine (C) nucleotide is added to the new sequence (AAGCCTGCGCAAT) which means the kind of mutation is insertion because a new nucleotide has been added or inserted into the sequence instead of eliminating a nucleotide (deletion), changing one nucleotide for other (substitution) or duplication a nucleotide (duplication).