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Topic: MRCA

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	Genealogical DNA test - Wikipedia, the free encyclopedia
		The test results are then compared to another person's results to determine the time frame in which the two people shared a most recent common ancestor (MRCA).
		If the two tests match on 37 markers, there is a 50% probability that the MRCA was less than 5 generations ago and a 90% probability that the MRCA was less than 17 generations ago.
		The test results are compared to another person's results to determine the time frame in which the two people shared a most recent common ancestor (MRCA).
	en.wikipedia.org /wiki/Genealogical_DNA_test (1731 words)

	Common ancestors of all humans (using genetics)
		As [Chang, 1999] notes, the MRCA will be much more recent than any MRCA that could ever be found in DNA studies, even if one were to study the ancestry of every single gene.
		Even if you did the MRCA for every gene, even the best result (the most recent) could be much older than the true MRCA.
		For instance, even the MRCAs found in DNA studies will exist much more recently than the paleontologists might imagine looking at the fossil evidence - for the simple reason that they are merely "statistical artefacts" of no real importance to the overall story of human evolution.
	humphrysfamilytree.com /ca.genetic.html (2924 words)

	Genealogy - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-09-10)
		Latest models, taking into account sexual differentiation, monogamy and realistic migration patterns suggest that the most recent common ancestor (MRCA) of all humans probably lived 75-150 generations or 2000-4000 years ago.
		Moreover, the MRCA is likely to have lived somewhere in Southeast Asia (increasing the likelihood of his or her descendents reaching the remote islands of the Pacific), is equally likely to be a man or woman, and is not characterized by an unusually large number of children.
		These models also show that while a large group (indeed all humans) share recent common ancestors, a given person is likely to share the vast majority of his or her genes with a very small local group.
	www.knowledgehunter.info /wiki/Genealogical (4630 words)

	Recent Bruce Walsh Papers (Site not responding. Last check: 2007-09-10)
		Walsh, B. Estimating the time to the MRCA for the Y chromosome or mtDNA for a pair of individuals, Genetics 158: 897--912
		Walsh, B. Quantitative Genetics in the Age of Genomics, in Theoretical Population Biology 59: 175--184.
		Joint Match Probabilities for Y and Autosomal Markers.
	nitro.biosci.arizona.edu /papers.html (253 words)

	Chandler Family Association
		The Chandler Family Association uses Family Tree DNA for our DNA Project testing.
		Genetic tests from Family Tree DNA will provide a probability that you and another person, if the two of you have an exact match, have a Most Recent Common Ancestor (MRCA) within a range of time backwards.
		The DNA test used measures the lengths of certain specific sequences on the Y chromosome.
	www.thecfa.org /dna.html (558 words)

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