Here's why:
* Human somatic cells (body cells) have 46 chromosomes, arranged in 23 pairs.
* Gametes (sperm and egg cells) are formed through a process called meiosis, which halves the number of chromosomes.
* This ensures that when a sperm and egg cell fuse during fertilization, the resulting zygote will have the correct number of chromosomes (46).
Therefore, the only cells in the human body that contain 23 chromosomes are the sperm and egg cells.
