Final answer:
Humans have 46 chromosomes in each body cell, comprising 22 pairs of autosomes and one pair of sex chromosomes, with males having XY and females having XX.
Step-by-step explanation:
The total number of chromosomes that humans have in their body cells is 46. This includes 22 pairs of autosomes and 1 pair of sex chromosomes. In females, the sex chromosomes are XX, while in males they are XY. Every somatic, or non-reproductive, cell contains this full set of chromosomes. Each of the 23 pairs of chromosomes contains genes that are expressed as proteins, impacting an individual's genotype and phenotype. In contrast, human gametes, which are sperm and egg cells, contain only 23 chromosomes each.