Question

Eukaryotic chromosomes always exist

• A. In pairs
• B. In association with mitochondria
• C. Singly
• D. None of the above

Answer 1

The correct option is D None of the above

Let's take Human somatic cell as an example for the typical eukaryotic cell.

The Human somatic cell is diploid that means the chromosomes exists in double number.

And these chromosomes in the eukaryotic cell are located in the nucleus and no where associated with mitochondria.

The human somatic cell has 23 pairs of chromosomes but there are 24 types of chromosomes because X and Y chromosomes which are called as sex chromosomes were structurally not similar.

The remaining 22 types of chromosomes exists in pairs which are homologous (structurally relative) with their pairs.

Hence, all the chromosomes doesn't exist in pairs.

And during the cell division process the homologous chromosomes were separated to opposite poles and therefore doesn't always exists in pairs.

And they also don't exist always in single.