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Inheritance and Family Planning

  • Roland Soper
Chapter
Part of the Work Out book series (WO)

Abstract

Mitotic division occurs in all body cells except gamete mother cells. It results in the production of new protoplasm, i.e. growth. The early divisions of the zygote and the embryo are mitotic, but as cells become specialised (i.e. muscle cells, nerve cells and blood cells), they lose the power of division. A few tissues continue to divide mitotically, e.g. bone marrow cells and the germinative layer of the skin. Each body cell has 46 chromosomes in its nucleus (diploid number i.e. 2n = 46).

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Copyright information

© Roland Soper 1992

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  • Roland Soper

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