This sequence represents a single mutation. mutation #2: 5' - | ggc | gtg | gta | taa | gcg | - 3' complete these sentences about this mutated dna sequence.

This mutant DNA sequence is the result of a TRANSVERSION. Transversion, in biology, is the substitution of a purine and pyrimidine or vice versa. In this case we can see that GTA was replaced by GTC therefore Adenine (purine) for a Cytosine (pyrimidine).

The effect of this substitution in the amino acid sequence is called a nonsense mutation. Because nonsense mutation means that it has an incorrect sequence which causes shortening of protein.

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