Question

In onion root tip during mitotic metaphase, the number of kinetochores is

• A. 4
• B. 64
• C. 32
• D. 16

Answer 1

The correct option is C 32

In onion root tip, each somatic cell contains 8 chromosomes. A cell undergoing cell division has duplicated its chromosomes thus a cell at metaphase stage of cell division has 16 chromosomes. As each chromosome has two kinetochores thus during metaphase 32 kinetochores can be seen.

So, the correct answer is '32'.