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Originally Posted by draqon allright S.A.M all of this I understood and about the mother's mitochondria inheritance...but the part I do not understand is during the cell division how these mitochnodria are made?
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Mitochondrial division is based on the energy needs of the cell. When energy needs are high, they grow and divide, when energy needs are low they are destroyed or become inactive.
The mothers cells (ovum) contain the mitochondria, so also the fathers cells (sperm). After fertilisation the resulting fertilised ovum only contains the mothers mitochondria.
When the cell divides into daughter cells, the mitochondria in the parent cell are distributed between the daughter cells.