Mitochondial vs Chromosomal DNA

Comparative DNA analysis is a very popular procedure in including and/or excluding individuals from a crime scene. However  since every person’s mitochondrial DNA is  of maternal origin, it is also easy with mitochondrial DNA  to prove that all her children- both the males and females   are hers.-  thats because the mitochondria are only found in cytoplasm and  the sperm which fertilizes an oocyte (egg cell)  does not have  any cytoplasm.  At least that  the theory.  It would be easy to prove this with cellular autoradiography using  tritiated thymidine providing such experiments met the code of ethics, probably not, then maybe our cousins – the chimpanzes wouldn’t, mind.

Author: Semeon Hrushovetz

Retired Physician, Researcher, Lifelong Learner. Promoting healthy aging and life extension. Visit: -and-

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