Question

which of the following shows a deletion mutation? * option 1 option 2 other: option 3

Explanation:

A deletion mutation is a type of genetic mutation where a section of DNA is removed or deleted. In Option 2, we can observe that a segment (represented by a colored "block") is missing from the lower strand compared to the upper strand, indicating a deletion. Option 1 seems to show an insertion (as there is an extra segment added) and Option 3 might show a rearrangement (not a simple deletion).

Answer:

Option 2