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Normal-

GAG-CTC-GAC-AGA Mutant GAG CTC-CAC-AGA
deletion
no mutation
insertion
substitution

1 answer

To analyze the given sequences:

  • Normal Sequence: GAG-CTC-GAC-AGA
  • Mutant Sequence: GAG-CTC-CAC-AGA

We can compare the two sequences to identify the type of mutation.

  1. The first two codons (GAG and CTC) are the same in both sequences.
  2. The third codon differs:
    • Normal: GAC
    • Mutant: CAC

The change from GAC to CAC indicates that a single base pair has been substituted in the third triplet.

Thus, the change can be classified as:

  • Substitution

The other options (deletion, no mutation, insertion) do not apply, as there is a clear change in the nucleotide sequence.