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Mendel had no idea that the genes he was studying were located in the chromosomes. In the 1880s, Pierre-Joseph von Beneden found that the germ cells, or seeds, contain half as many chromosomes as other cells of an organism. Germ cells are called the sperm and egg in mammals. When a sperm and egg combine, the resulting cell has the normal number of chromosomes in it for that particular organism.
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This section contains 76 words (approx. 1 page at 300 words per page) |
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