As of 2008, what can science tell me about my genetics thru DNA testing.
peacheater:@vacapinta: I don’t understand how you’re coming by these figures. Before gametes (eggs and sperm) are produced by the process of meiosis crossing over occurs between your maternal and paternal chromosomes. This exchanges bits of DNA between the chromosomes. This occurs for all 23 pairs of your chromosomes. Thus all the eggs/sperm that are produced have bits from both your maternal and paternal ancestors. Therefore it is incorrect to say that a maternal test will only tell you about the ancestry of 1/4th of your great grandparents or 1/8 th of your great grandparents. It will tell you about 1/4 th of each of your great grandparents’ DNA or 1/8th of each of your great-great grandparents’ DNA. But none of your ancestors becomes invisible as such. Though things get muddled up so quickly it doesn’t seem like a very worthwhile proposition.No.
