Question

Which is the primary constriction for every visible chromosome?

• A. Centromere
• B. Ribosomes
• C. Kinetochores
• D. Histones

Answer 1

Answer:

A. Centromere

• Every visible chromosome has two sister chromatids which are constricted together at a point known as the centromere.

• During mitosis, the spindle fibres attach to the chromosomes via the centromere.