B1- cell biology (chromosomes and mitosis)

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B1- cell biology

chromosomes and mitosis

Most cells in the body have a nucleus, this contains genetic material in the form of chromosomes.

Chromosomes- structure of DNA 

Each chromosome carries large numbers of genes, which control the development of different characteristics e.g. hair colour. Body cells normally have two copies of each chromosome (one from each parent). Body cells have 23 pairs of

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