Question

Centrosomes are duplicated during interphase; therefore, there are ____ centrosomes present in a cell just before mitosis. Each daughter cell receives ____ centrosome.

A. 1; 1
B. 2; 1
C. 1; 2
D. 2; 2

Answer 1

Before mitosis, a cell has two centrosomes; each daughter cell receives one centrosome after division.

Step-by-step explanation:

Centrosomes are duplicated during the S phase of interphase, ensuring that by the time a cell is ready to enter mitosis, it has two centrosomes.

Therefore, there are two centrosomes present in a cell just before mitosis begins. As the cell undergoes mitosis and subsequently divides during cytokinesis, each daughter cell receives one of these centrosomes. Hence, the correct answer to the question is B. 2; 1.