Question

Which type of mutation has occurred when the DNA sequence TAG GTC CAC is mutated to TAG GTC CCC? A. Missense mutation

B. Nonsense mutation
C. Silent mutation
D. Frameshift mutation

Answer 1

The DNA mutation from TAG GTC CAC to TAG GTC CCC is a missense mutation, which causes a change in one amino acid to another in the protein that is encoded by the DNA sequence, potentially affecting the protein's function.

Step-by-step explanation:

The DNA sequence TAG GTC CAC mutated to TAG GTC CCC exhibits a type of mutation known as a missense mutation. In a missense mutation, a single nucleotide substitution results in the change of one amino acid to another in the encoded protein. This specific point mutation has altered the triplet code from CAC to CCC, which changes the amino acid encoded by the DNA sequence.

It's important to note that this change might have significant effects on the protein structure and function, similarly to how sickle cell disease is caused by a missense mutation in the hemoglobin gene.In this case, a single nucleotide (C) is inserted, which shifts the reading frame and changes the entire sequence of codons and the resulting amino acids.