Question

Which of the following is true of kineto-chores?

• A. They are localized at the centromere of each chromosome.
• B. They are the sites where microtubules attach to separate the chromosomes.
• C. They are organized so that there is one per sister chromatid in meiosis.
• D. All of the above

Answer 1

Answer: (D)

Kinetochores are assembled at the centromere of each chromosome and are the sites where microtubules attach to segregate the chromosomes. In meiosis there is only one fused kinetochore per chromosome; in mitosis there are two kinetochores per chromosome.