What type of mutation has occurred? Below are two sequences of a segment of DNA .Normal sequence: TGA CAC TAG Mutated sequence: TGA CCT AG. a. Deletion mutation b. Nonsense mutation c. Insertion mutation d. Substitution mutation
Biology · High School · Wed Jan 13 2021
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- The mutation that has occurred when comparing the normal sequence (TGA CAC TAG) and the mutated sequence (TGA CCT AG) is a. Deletion mutation.
- This is because, in the mutated sequence, a nucleotide appears to have been lost. The normal sequence has nine nucleotides, while the mutated sequence has only eight. Since the sequences differ by a missing nucleotide (in this case, the fourth nucleotide 'A' is missing in the mutated sequence), we can determine that a deletion mutation has taken place.