Biology

The correct answer is: A.Deletion

Explanation:

When bases are removed from the DNA sequence and it causes a shift in the "reading frame," this is called a deletion mutation. Removing bases alters the way the sequence is read in codons, which can change the entire amino acid sequence downstream of the mutation. This type of mutation can lead to a frameshift, which significantly impacts protein function.

Here’s why the other options are incorrect:

B.Insertion: An insertio...