Chromosomes mind map

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  • Chromosomes
    • The nucleus of a cell contains chromosomes made of DNA.
    • each chromosome carries hundreds and thousands of genes.
      • different genes contain the code to make different proteins and so control the development of different characteristics.
    • In body cells the chromosomes are found in pairs with one chromosome from each parent.
    • different species have different numbers of pairs of chromosomes.
      • humans have 23 pairs and dogs have 39 pairs.

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