The number of chromosomes in the somatic cells of a human body before mitosis and after mitosis is:

46, 46

Reason — Somatic cells are body cells and have a diploid number of chromosomes, which is 46 in humans. During mitosis, the cell divides to form two identical daughter cells, each with the same number of chromosomes as the parent cell. The number of chromosomes before and after mitosis remains 46.