Scientists commonly choose white blood cells that are going through mitosis to prepare karyotypes. Why?

This is because during mitosis, chromosomes are more condensed than during interphase.

Explanation:

During interphase, the cell grows and the nuclear DNA is duplicated. Interphase is followed by the mitotic phase, individual chromosomes are not visible, and the chromatin appears diffuse and unorganized

During the mitotic phase, the duplicated chromosomes are segregated and distributed into daughter nuclei. The cytoplasm is usually divided as well, resulting in two daughter cells.

This is because during the phase of mitosis, chromosomes of the white blood cells condense.

Explanation:

A karotype tells us about the appearance of a chromosome which involves the number of the chromosomes as well as the structure of the chromosomes.

Karotype can be used to detect any defect or abnormalities that can lead to sicknesses or health disorders in a person.

In order to prepare a karotype, white blood cells going through mitosis is used because during mitosis the chromosomes of the white blood cells condense thereby making movement easier for the cells.