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To: Haim R. Branisteanu who wrote (38540)	8/12/2008 10:59:16 AM
From: dybdahl	Read Replies (3) \| Respond to of 218126

The haplotype G only tells you the father's line of your genes. Your mitochondria are from your mother, and tracking those means that you can find another categorization for your genes. That's 2 categorizations. For each gene in your set of genes, you can get a new set of categorizations. en.wikipedia.org Many statements about these groups are incorrect. I will give a few examples: 1) "You belong to the group of people in this category". Well, you belong to thousands of different groups of people that have categories like yours. On a more general level, you belong to the group of people with the same eye color as you, the same skin color as you, the same hair type as you etc. You don't need a genetic test to find some genetic groups that you belong to. 2) "By analyzing haplogroups, we can see that population XXX only descends from 10 men" - that's simply incorrect. The statement should have been, that only 10 men's Y-chromosomes survived the evolution process, but you may have many more genes of other types from other men, that lived at the same time as these 10 men. 3) "People in a haplogroup share certain features." Yes - but not a lot. If you want to find a group of people with whom you share a lot of features, go home to your family. 4) "We can now draw a map that shows how humanity moved across continents, by analyzing the haplogroups". No. This only shows how these specific genes moved, and a lot of dead ends will be missing. If you pick another gene, the map will look totally different. commons.wikimedia.org Many people get fascinated by genes because of it's good coverage in the news. There is no doubt that genes contain a lot of information, but you need to think things through before making conclusions.