Question

If a cell has 40 chromosomes, how many centromeres would it have when it is in metaphase? a. 1 b. 2 c. 20 d. 40 e. 80

Answer 1

Answer:

Basically this depends on the type of cell division the cell undergoes.

if the cell undergoes reduction division of meiosis(n) the  chromosome number will be reduced to 20 so the centromere will be 20, However if the cell undergoes multiplication division of mitosis,(2n) the centromere will be 40, since the chromosomes number will increases and sister chromatids holding the chromosomes are held at centro mere.

Explanation:

Answer 2

If the cell has 40 chromosomes, the number of centromeres will also be 40 the same number as the chromosome.

The correct option is (D) 40.

Centromere

• The centromere is present in the center of the chromosomes.

• It helps to attach two arms of chromosomes.

• It separates the chromosome into two short arms.

Thus, the correct option is (D) 40. Since in metaphase the chromosomes are aligned in a straight line, there is no change to occur in the number of chromosomes.

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