Inheritance of mtDNA

Human Anatomy, Physiology, and Medicine. Anything human!

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Inheritance of mtDNA

Post by Aerlinn » Mon Oct 23, 2006 11:06 am

I heard somewhere that mitochondria, and therefore mitochondrial DNA, was passed onto ova at random... Can someone tell me how that's done? ie. What happens to the organells during gamete production?
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mtDNA inherited from both parents?

Post by honeev » Wed Oct 25, 2006 10:33 am

remember fertilization .. mature sperm cell consits of the head (wer compacted nucleus is), mitochondrial helix on its mid piece (to supply ATP), and a tail (for movement).. but the ovum it retains the bulk of its cytoplasm (including mitochondria) ... so wen the sperm penetrates the ovum during fertilization it releases its DNA, while other cell structures, like mitochondria, are destroyed... thus it is said that mitochondrial DNA is maternally inherited...

but interestingly, recently it was shown that mtDNA can also be inherited from a male parent...

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