The blood type analysis and the DNA analysis are two different things. The people doing the DNA analysis are geneticists. They have found different genetic patterns from identifyable genetic markers from which they have classified populations throughout the world into groups called haplogroups based on their genetic similarity. This is based on the changes occurring in the genetic structure over time, which is very, very slow in the case of mtDNA. However, it only works by tracing back on the male line using the Y-chromosome DNA from father to grandfather to great-grandfather etc., or conversely by using the mtDNA from mother to grandmother to great-grandmother, etc.. Essentially, we are talking about variations on the same theme because if you go back far enough, you arrive at a particular woman with a particular genetic makeup who becomes the mother of everyone. This can be proven by science because we know from archeology the time frame in which homo sapiens first appear, and we know the approximate rate of variation in mtDNA. Assuming the hypothesis that there was one original mother, scientists can calculate when she lived based on the known approximate rate of variation and the observable extent of genetic variation throughout the world. Then, they can compare that with the known time frame for homo sapiens living on planet earth. If we assume more than one original mother with different genetic makeup, we would have to have much more genetic variation today than what scientists actually observe in order for it to fit within the time frame. If we assume more than one mother with the same genetic makeup, i.e. identical twins, then we also have to admit that both had the same biological mother which gets us to the same result of one original mother. Michael O'Hearn ____________________________________________________________________________________ Need a quick answer? Get one in minutes from people who know. Ask your question on www.Answers.yahoo.com

You are quite absolutely correct. Geneticists do study the identifiable characteristics of genes. However, well before geneticists came to be, hematologists provided the same sort of information. For example, in the 1970s I had a hematologist explain the sources of my blood group and its genotype. While DNA examination has grown by leaps and bounds, the story for me remains essentially the same. My request is that I want to know the credentials of persons supplying the information . It aids my investigation to know that the information is science based. One reference in this very interesting stream of emails referred to the Blood Type diet, a diet that nutritionists and other scientists have proved to be hog wash. Thanks so much for the topic. It is absolutely facinating but this scientists wants references so that I don't have to start anew or have anyone, myself included, go away with information that is not science based. Beth On 1/31/07, Michael O'Hearn <[email protected]> wrote: > The blood type analysis and the DNA analysis are two > different things. The people doing the DNA analysis > are geneticists. They have found different genetic > patterns from identifyable genetic markers from which > they have classified populations throughout the world > into groups called haplogroups based on their genetic > similarity. This is based on the changes occurring in > the genetic structure over time, which is very, very > slow in the case of mtDNA. However, it only works by > tracing back on the male line using the Y-chromosome > DNA from father to grandfather to great-grandfather > etc., or conversely by using the mtDNA from mother to > grandmother to great-grandmother, etc.. Essentially, > we are talking about variations on the same theme > because if you go back far enough, you arrive at a > particular woman with a particular genetic makeup who > becomes the mother of everyone. This can be proven by > science because we know from archeology the time frame > in which homo sapiens first appear, and we know the > approximate rate of variation in mtDNA. Assuming the > hypothesis that there was one original mother, > scientists can calculate when she lived based on the > known approximate rate of variation and the observable > extent of genetic variation throughout the world. > Then, they can compare that with the known time frame > for homo sapiens living on planet earth. If we assume > more than one original mother with different genetic > makeup, we would have to have much more genetic > variation today than what scientists actually observe > in order for it to fit within the time frame. If we > assume more than one mother with the same genetic > makeup, i.e. identical twins, then we also have to > admit that both had the same biological mother which > gets us to the same result of one original mother. > > > > > Michael O'Hearn > > > > > > ____________________________________________________________________________________ > Need a quick answer? Get one in minutes from people who know. > Ask your question on www.Answers.yahoo.com > > ====Irish American Mailing List===== > Add/check your surname to the Irish-American mailing list Surname Registry at: http://www.connorsgenealogy.com/IrishAmerican/ > > ------------------------------- > To unsubscribe from the list, please send an email to [email protected] with the word 'unsubscribe' without the quotes in the subject and the body of the message > -- Elizabeth W. Tordella, MS, RN

I began this discussion a few days ago by simply stating scientific facts from memory, facts which were included in newspaper articles for the most part, and which I then took the time to verify over a period of time through my own research, using my own degree of knowledge from biology and other science courses taken at the high school and university levels. The scientists research upon which I based these facts are from world renowned geneticists Bryan Sykes of Oxford and Peter Underhill of Stanford, and in addition to these in the field of genetics, also anthropologist and writer Marija Gimbutas now deceased but formerly on the faculty at University of California, Los Angeles. I respect your interest in the subject and hope you find sufficient scientific corroboration to verify these facts for yourself. I am very open minded and would welcome other scientific facts that may contradict the facts which I presented. Anyone can draw their own conclusions from scientific facts and that is why we have open discussion. Michael O'Hearn --- Elizabeth Tordella <[email protected]> wrote: > You are quite absolutely correct. Geneticists do > study the > identifiable characteristics of genes. However, well > before > geneticists came to be, hematologists provided the > same sort of > information. For example, in the 1970s I had a > hematologist explain > the sources of my blood group and its genotype. > While DNA examination > has grown by leaps and bounds, the story for me > remains essentially > the same. > > My request is that I want to know the credentials of > persons supplying > the information . It aids my investigation to know > that the > information is science based. One reference in this > very interesting > stream of emails referred to the Blood Type diet, a > diet that > nutritionists and other scientists have proved to be > hog wash. > > Thanks so much for the topic. It is absolutely > facinating but this > scientists wants references so that I don't have to > start anew or have > anyone, myself included, go away with information > that is not science > based. > > Beth ____________________________________________________________________________________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com