The correct option is A.
What is a point mutation?
A point mutation occurs in a genome when a single base pair is added, deleted, or changed. While most point mutations are benign, they can also have various functional consequences, including changes in gene expression or alterations in encoded proteins.
What are point mutation and frameshift mutation?
In a frameshift mutation, deletion or insertion of one nucleotide leads to a change in the reading frame of codons in a gene from that point onwards, whereas in point mutation, there is a change in only one base pair of DNA due to substitution.
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