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Genes, Chromosomes and DNA

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Most of your cells in your body have this, it contains your genetic material in the form of chromosomes
A human cell have 23 paired versions of this. They carry genes
Different ones of these control different characteristics. It is a short length of the chromosome but is quite a long length of DNA
This is coiled up to form the arm of a chromosome
These are the different versions of the same gene that you have