How many chromosomes do humans have?

Question

I want to know how many chromosomes humans have.

Answer 1

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.

Answer 2

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.

Answer 3

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.....

Answer 4

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.

Answer 5

In general, humans have 46 chromosomes in each diploid somatic cell, so 2n = 46. These come in 23 pairs. The autosomes are numbered 1-22, and the 23rd pair are the sex chromosomes X and Y. Typically biological females are XX and biological males are XY. Human gametes, eggs and sperm, are haploid cells, each containing one copy of each chromosome, so n = 1. (n refers to the number of sets of chromosomes.)

Answer 6

Human has a total of 46 chromosomes, present in the form of pairs 23chromosomes comes from each parent. So, 23 pairs of chromosomes are present in humans.

Answer 7

In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females

Answer 8

Human contain 46 chromosomes in 23 pairs.

Answer 9

Humans have 46 chromosomes in total, with half coming from their mother and half from their father. Because we have two sets of chromosomes, we are also referred to as being "diploid" organisms.

Not all organisms have the same number of chromosomes that we do. Fruit flies, for example, have four chromosomes, and some species of toads have 33! These special types of toads are also unique because they have three sets of chromosomes, making them triploid organisms.

Answer 10

Human contain 46 chromosomes in 23 pairs.

Answer 11

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.

Answer 12

We have 46 chromosomes. They come as 23 pairs.