Question

In onion root tip during metaphase stage of mitiosis the number of kinetochores will be -

• A. 4
• B. 8
• C. 16
• D. 32

Answer 1

Answer: (D)

32

The state of the cell in metaphase stage of mitosis in root tip is diploid that is 2n, so there is 16 chromosome in root tip of onion as n is 8. But each chromosome contains 2 kinetochores, so the number of kinetochores in metaphase stage of mitosis is 32.

So, the correct option is D.