j.w
I Love my Goldies
- Joined
- Feb 1, 2010
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- Arlington, Washington
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Sun was out here this morning and then the fog rolled in.....getting thicker by the minute! Only mid 30's and 22 tonight.
Sissy, think they can get DNA from bones/fossils in area's of the world and also take samples from people known to have continued to live in the same area for many generations for comparisons.
Taken from: http://www.amnh.org/...ord-of-the-past
Inherited History
You inherit half of your DNA from your mother and half from your father. Before the DNA is passed to the next generation, it gets recombined, or shuffled--that's what makes each person unique. But two chunks of DNA--mitochondrial DNA and the Y chromosome--break the rule. They never get shuffled, so from generation to generation they remain unchanged. As a result, scientists can use them to look millions of years into the past.
Mitochondrial DNA
Mitochondrial DNA passes from a mother to all her children, but only the daughters pass it to the next generation. Experts can trace female ancestry by studying patterns of mutations in mitochondrial DNA. Some of the mutations happened millions of years ago, others more recently.
Sissy, think they can get DNA from bones/fossils in area's of the world and also take samples from people known to have continued to live in the same area for many generations for comparisons.
Taken from: http://www.amnh.org/...ord-of-the-past
Inherited History
You inherit half of your DNA from your mother and half from your father. Before the DNA is passed to the next generation, it gets recombined, or shuffled--that's what makes each person unique. But two chunks of DNA--mitochondrial DNA and the Y chromosome--break the rule. They never get shuffled, so from generation to generation they remain unchanged. As a result, scientists can use them to look millions of years into the past.
Mitochondrial DNA
Mitochondrial DNA passes from a mother to all her children, but only the daughters pass it to the next generation. Experts can trace female ancestry by studying patterns of mutations in mitochondrial DNA. Some of the mutations happened millions of years ago, others more recently.