volume_mute
How many pairs of chromosomes do humans have?
publish date: 2026/06/16 11:19:5.767016 UTC
volume_mute
The number of chromosomal pairs varies by species. The actual number of pairs depends on the species involved.
How many pairs of chromosomes do humans have?
Correct Answer
23 pairs
Explanation
Humans have 23 pairs of chromosomes - a total of 46 chromosomes in each diploid body cell. Of these, 22 pairs are autosomes and one pair are the sex chromosomes (XX in females, XY in males). Each gamete (sperm or egg) contains 23 chromosomes - one from each pair.
Reference
Biology: A Self-Teaching Guide