What proportion of chromosomes in a man's skin cell are maternal chromosomes?

Video transcript

Hi everyone, welcome back. Here's our next question. Where is mitochondrial DNA inherited from our choices? Our mother father half from the mother and half from the father or mostly from the mother. Well unlike the majority of our DNA in our chromosomes, which has inherited half from the mother and half from the father. We recall from our content videos that mitochondria have their own D. N. A. And in this case that mitochondria is inherited only from the mother coming from the egg cell. Those mitochondria have their own D. N. A. So they reproduce independently. Ah sperm does have a few mitochondria but those degrade shortly after fertilization. So the source of all the offspring's mitochondrial mitochondria will be from the mother. So all the mitochondrial D. N. A. Will only be from her mitochondria found in the egg cell. So our answer is choice A. The mother. See you in the next video.