Each chromosome has a double helix. 23 pairs is valid as is 46 total and each individual has that same double helix structure.Nostradamus'omh » 28 Apr 2023, 8:22 am » wrote: ↑ Question, when I was in school it was 46, but in the last decade there are some saying it is only 23 pairs because they didn't see the double helix when it was assumed 46?