Where is the centromere located on the chromosome, and what is its role?
Select one:

a.
It is exactly at the center and it is responsible for making the q-arm longer than the p-arm.

b.
It is not exactly at the center, and it always makes the p-arm longer than the q-arm.

c.
It is exactly at the center, and it attaches to spindle fibers during cell division.

d.
It is not exactly at center, and it attaches to spindle fibers during cell division.