please write a short essay with the answer.
2006-08-27 05:54:06 · 8 answers · asked by miss omar 1 in Social Science ➔ Other - Social Science
Humans have 23 chromosomes. Rather than write an essay, I'll refer you to the excellent essay at Wikipedia.
2006-08-27 05:59:01 · answer #1 · answered by Mikey W 1 · 0⤊ 0⤋
There are 22 pairs of chromosomes, identified as A through V. Before the 1960's, scientists thought that there were 24 pairs, labeled A through X. However, "X" turned out to be two different chromosome pairs that determined sex. So, Chromosome W was replaced by either an X chromosome or a Y chromosome. X is carried only by women, and men can carry either an X or a Y (and that's what probably accounted for the error).
Consequently, we now know that we have 23 pairs of chromosomes, A through V and an X or a Y.
2006-08-27 14:57:34 · answer #2 · answered by Goethe 4 · 0⤊ 0⤋
Humans have 46 chromosomes (23 pairs).
2006-08-27 13:03:05 · answer #3 · answered by rockstar 1 · 0⤊ 0⤋
Humans actually have *46* chromosomes, in 23 pairs.
2006-08-27 13:00:56 · answer #4 · answered by ceprn 6 · 0⤊ 0⤋
Each human cell has 2 chromosomes that are either X or Y. Eache chromosome has 42 genomes which are the encoded information ofr the body
2006-08-27 13:00:09 · answer #5 · answered by Anonymous · 0⤊ 0⤋
46 2 pairs of 23.
2006-08-27 13:02:52 · answer #6 · answered by monty 1 · 0⤊ 1⤋
46, not 23, 'mkay?
2006-08-27 13:00:39 · answer #7 · answered by Pseudo Obscure 6 · 0⤊ 0⤋
short and sweet :D
2006-08-27 12:59:10 · answer #8 · answered by Lynden 3 · 0⤊ 0⤋