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Human chromosomes picture

Human chromosomes

The structures in cells that contain the cellular DNA, which contain the linear array of genes. In eukaryotes, the DNA is divided into chromosomes which "condense" into the familiar X-shaped structures at mitosis. Each chromosome has a characteristic length and banding pattern, which is the basis of karyotyping. Different species contain different numbers of chromosomes. Humans have 23 pairs of chromosomes. Prokaryotes contain one chromosome, which is circular.

 
 
 
 

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