http://www.lifemapdna.com/would-the-mitochondrial-dna-of-a-clone-match-that-of-the-parent-or-of-the-egg-donor.html Thu, 08 Sep 2011 20:10:50 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.lifemapdna.com/would-the-mitochondrial-dna-of-a-clone-match-that-of-the-parent-or-of-the-egg-donor.html/comment-page-1#comment-1171 Rachel R Mon, 09 Nov 2009 19:21:07 +0000 http://www.lifemapdna.com/would-the-mitochondrial-dna-of-a-clone-match-that-of-the-parent-or-of-the-egg-donor.html#comment-1171 The clone would have the egg donor's mitochondrial DNA. I don't know about the consequences for that, but I don't believe it would make any noticeable difference. The clone would have the egg donor’s mitochondrial DNA. I don’t know about the consequences for that, but I don’t believe it would make any noticeable difference.

]]> http://www.lifemapdna.com/would-the-mitochondrial-dna-of-a-clone-match-that-of-the-parent-or-of-the-egg-donor.html/comment-page-1#comment-1172 tsull73 Mon, 09 Nov 2009 19:21:07 +0000 http://www.lifemapdna.com/would-the-mitochondrial-dna-of-a-clone-match-that-of-the-parent-or-of-the-egg-donor.html#comment-1172 cant you just ask something about your boyfriend like everybody else? cant you just ask something about your boyfriend like everybody else?

]]> http://www.lifemapdna.com/would-the-mitochondrial-dna-of-a-clone-match-that-of-the-parent-or-of-the-egg-donor.html/comment-page-1#comment-1173 GreenIYD Mon, 09 Nov 2009 19:21:07 +0000 http://www.lifemapdna.com/would-the-mitochondrial-dna-of-a-clone-match-that-of-the-parent-or-of-the-egg-donor.html#comment-1173 Mitochondrial DNA comes from the mother. Mitochondrial DNA comes from the mother.

]]> http://www.lifemapdna.com/would-the-mitochondrial-dna-of-a-clone-match-that-of-the-parent-or-of-the-egg-donor.html/comment-page-1#comment-1170 glorialuciani Mon, 09 Nov 2009 19:21:06 +0000 http://www.lifemapdna.com/would-the-mitochondrial-dna-of-a-clone-match-that-of-the-parent-or-of-the-egg-donor.html#comment-1170 Any animal created using nuclear transfer technology is not truly an identical clone of the donor animal. Only the clone's chromosomal or nuclear DNA is the same as the donor. Some of the clone's genetic materials come from the mitochondria in the cytoplasm of the enucleated egg. Mitochondria, which are organelles that serve as power sources to the cell, contain their own short segments of DNA. Acquired mutations in mitochondrial DNA are believed to play an important role in the aging process, which is likely to be accelerated. This is ahat cloned animals, like Dolly the sheep, encountered and is going to be a real concern for some time, still. One possible solution could be given by the use of twinning or “embryo cloning”: Twins have identical both nuclear and mitochondrial DNA; they can be produced in laboratories, too. Scientists simply have to chemically divide the zygote (fertilized egg cell) of a female animal before it begins to undergo mitosis (natural cell division). Human zygotes have been twinned in laboratories, although the embryos were never born. Any animal created using nuclear transfer technology is not truly an identical clone of the donor animal. Only the clone’s chromosomal or nuclear DNA is the same as the donor. Some of the clone’s genetic materials come from the mitochondria in the cytoplasm of the enucleated egg. Mitochondria, which are organelles that serve as power sources to the cell, contain their own short segments of DNA. Acquired mutations in mitochondrial DNA are believed to play an important role in the aging process, which is likely to be accelerated. This is ahat cloned animals, like Dolly the sheep, encountered and is going to be a real concern for some time, still.
One possible solution could be given by the use of twinning or “embryo cloning”: Twins have identical both nuclear and mitochondrial DNA; they can be produced in laboratories, too. Scientists simply have to chemically divide the zygote (fertilized egg cell) of a female animal before it begins to undergo mitosis (natural cell division). Human zygotes have been twinned in laboratories, although the embryos were never born.

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