Question

A pericentric inversion in chromosome involves _______________.

• A. One arm of a chromosome
• B. Both the arms of a chromosome
• C. Two different chromosomes
• D. More than two chromosomes

Answer 1

The correct option is B Both the arms of a chromosome

• An inversion occurs when a single chromosome undergoes breakage and rearrange after 180-degrees rotation of segment.
• Pericentric inversions include the centromere that means there is a breakpoint in both arms (P & Q arm) as shown in the figure.

So the correct answer is option B.