The mutation shown in the sequence can be categorized as which type?

Question

Original DNA sequence:

A T A C G G T A G C A A
T A T G C C A T C G T T
Mutated DNA sequence:

A T A C G G T A G A A
T A T G C C A T C T T
(1 point)
Responses

substitution mutation
substitution mutation

insertion mutation
insertion mutation

chromosomal mutation
chromosomal mutation

deletion mutation

Answer 1

The mutation in the provided DNA sequences can be categorized as a substitution mutation.

Here's the breakdown:

• In the original sequence, the nucleotide "C" in the first strand of the second position is changed to "A" in the mutated sequence.
• Similarly, in the complementary strand, the nucleotide "G" in the position corresponding to the first position of the mutated strand is changed to "T".

Since one base in the sequence is replaced by another without the addition or removal of bases, this is a substitution mutation.