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{{merge|Chromosomes}}
[[Image:763.jpg|right|thumb|400px]]
[[Image:763.jpg|right|thumb|400px]]
A '''Chromosome''' is one of the threadlike "packages" of [[genes]] and other [[DNA]] in the [[nucleus]] of a [[cell]]. Different kinds of organisms have different numbers of chromosomes. Humans have 23 pairs of chromosomes, 46 in all: 44 autosomes and two [[sex chromosomes]]. Each parent contributes one chromosome to each pair, so children get half of their chromosomes from their mothers and half from their fathers.
A '''Chromosome''' is one of the threadlike "packages" of [[genes]] and other [[DNA]] in the [[nucleus]] of a [[cell]]. Different kinds of organisms have different numbers of chromosomes. Humans have 23 pairs of chromosomes, 46 in all: 44 autosomes and two [[sex chromosomes]]. Each parent contributes one chromosome to each pair, so children get half of their chromosomes from their mothers and half from their fathers.