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For human cells, the chromosome number is 46. This means there are 23 pairs of chromosomes. Human cells contain 44 autosomes and two sex chromosomes, the X and Y chromosomes. For female humans, they will have 44 autosomes and two X chromosomes. Human males have 44 autosomes and one X and one Y chromosome. For other species, the chromosome numbers are normally different from the number of chromosomes in human cells.