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Question

Is mitochondrial DNA inherited from the mother or father?


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Solution

Fertilization:

  1. It is the term, given to the fusion of male gamete (sperm) and female gamete (ovum).
  2. The sperm gives only its nucleus which is released into the egg cell.

The ovum:

  1. The ovum contains cellular organelles and a nucleus that fuses with the sperm nucleus.
  2. The mitochondria of the zygote are of the mother (ovum).

Therefore, mitochondrial DNA is inherited from the mother.


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