Jose F.

asked • 12/11/12# How many chromosomes do humans have?

I want to know how many chromosomes humans have.

## 7 Answers By Expert Tutors

Christine M. answered • 09/26/19

Experience both in teaching and the real world.

Human beings have 23 pairs of chromosomes, since they are in pairs the total number of chromosomes is forty six. This is the normal number. There are individuals that unfortunately have extra copies of chromosomes but this leads to problems for the person, for example people with one extra chromosome on a pair of chromosomes making it a triplet (three chromosomes instead of two) have Down syndrome. Remember when cells divide the chromosomes split in half and replicate so each new cell has a complete set of twenty three chromosomes.

46.

Note that the size of an organism hasnothing to do with its chromosome number. (I find this interesting.) A shrimp has 254 and a horse has 66. Weird huh.....

Rupa B. answered • 12/11/12

Well qualified and experienced biology and chemistry tutor

Human have total 46 chromosomes i.e. 23 pairs. In males it is 22 pairs of autosomes +X and Y chromosomes and in females it is 22 pairs of autosomes + a pair of X chromosomes.

They have 23 unique chromosomes total. In a cell there are two copies of each chromosome, as written 2n. So therefore there are 46 chromosomes in a cell when not dividing. Then there are the X and Y chromosomes, and either an X Y or an XX per cell.

Harma S. answered • 04/01/20

i am the student of biology and have its knowledge

Human contain 46 chromosomes in 23 pairs.

Maryjane W. answered • 03/02/20

EXPERIENCED BIOLOGY TUTOR

46 chromosomes

Humans have 46 chromosomes that occur in 23 pairs in somatic cells and gametes respectively. The chromosomes in somatic cells are diploid while in gametes are haploid. the 46 chromosomes are due to mitosis and 23 pairs are due to meiosis.

Roman C. answered • 12/11/12

Masters of Education Graduate with Mathematics Expertise

We have 46 chromosomes. They come as 23 pairs.

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Awesome G.

23 pairs09/17/19