Look at the DNA sequence (1st Picture) Which sequence shows a substitution mutation? (2nd Picture) Also, can you explain how you got the correct answer?

Sequence A

CGTTACTGCAAT to CGTGACTGCAAT

Explanation:

Mutation refers to any change, whether big or small, that occurs in the nucleotide sequence of a DNA/gene. This change can either be caused by replicational errors or induced by mutagens. Mutation can be of different types depending on the effects on the affected organism (mutant).

A substitution mutation is a kind of mutation in which one or more nucleotide base is replaced by another in a sequence. This is the case here as the

original sequence: CGTTACTGCAAT

Mutated sequence: CGTGACTGCAAT

The fourth base, T has been replaced by G in the upper strand of the DNA sequence.

idk

explanation:

straight probes are used primarily for measuring flow as it is approaching the test area. its geometry allows the probe to be mounted so that it is in the direct line of airflow.