Refer to the table. A bacterial cell has been exposed to a powerful mutagen.In the table shown, a sequence from this cell is compared with the same sequence from its ancestral cell.Intervening sequences where the ancestral and descendant cells have identical sequences are represented by dots.In the mutated cell there have been ________ transition(s) and _______ transversion(s).

Question

Refer to the table.  A bacterial cell has been exposed to a powerful mutagen.In the table shown, a sequence from this cell is compared with the same sequence from its ancestral cell.Intervening sequences where the ancestral and descendant cells have identical sequences are represented by dots.In the mutated cell there have been ________ transition(s) and _______ transversion(s).

Quizplus · Accepted Answer

The mutated sequence has three changes from the ancestral sequence. The first change is a transition from a G to an A at position 3. The second change is a transition from a C to a T at position 7. The third change is a transversion from an A to a G at position 15. Therefore, there are three transitions and two transversions in the mutated cell, making choice E the correct answer.

Refer to the Table