You have a series of cells, all of which were derived from tumors, and you first need to find out

which ones are malignant. what could you do?

a. see which ones are not overproliferating.

b. find out which ones have a higher rate of apoptosis.

c. karyotype samples to look for unusual size and number of chromosomes.

d. measure metastasis.

e. time their cell cycles.

The correct answer is option c. "Karyotype samples to look for unusual size and number of chromosomes".

Explanation:

The number and arrangement of chromosomes are two features that differentiate between a cancer cell that is malignant and a cancer cell that is non malignant. Fortunately, a basic karyotype experiment will be enough to spot a malignant cancer cell. In a karyotype, an unusual large size and an unusual number of chromosomes (aneuploidy) will be indicatives of the presence of malignant cancer cells.

d. making up measurements to record.