Question

Human somatic cells contain 46 chromosomes. A scientist finds a cell in a bone marrow sample that contains 92 chromosomes. What must be true about this cell?

A. The cell has just completed mitosis.
B. The cell has suffered a genetic mutation and may be cancerous.
C. The cell is in the first growth phase G1 of interphase
D. The cell is in the second growth phase G2 or mitotic (M) phase.

Answer 1

Answer: D. The cell is in the second growth phase

Step-by-step explanation:

Mitosis is the process of dividing the cell's nucleus to produce two genetically identical nuclei. Since a normal cell (with a single nucleus) has 46 chromosomes, then a replica of that nucleus would mean an additional 46 chromosomes, which is a total of 92 chromosomes. I also took the test and got a 5/5 so I know it's right.