Genetic Testing

1 - 10 of 63 Answers

July 9, 2018: How do ancestry tests work?
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July 9, 2018: If I have 9% DNA jewish and mideastern does that mean my ancestry is likely to be from Israel?
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January 19, 2018: Why can’t a genetic test predict whether I will get Type 2 diabetes? Why can it report only a bigger or smaller chance of getting it?
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September 28, 2017: I bought an Ancestry DNA test and downloaded the raw data and put it into a database. It said that at rs1393350 I have A, A, and said that this was rare (0.63% of the population) and I had an increased risk of melanoma. It showed me a chart that put me quite a bit into the danger zone, and now I am really scared!
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March 21, 2017: I just got my results back from 23andMe and I was wondering how they link the genetic markers to the diseases, the ones where I have a predisposition for that disease. 
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November 18, 2016: I’ve heard that no one has the exact same DNA except for identical twins. But Ancestry.com DNA tests showed that my sister, mother, and I have the same DNA breakdown (100% Eastern European). My sister and I are not twins. What is the reason for this similarity? Should my other siblings take the test, too?
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September 27, 2016: I’ve heard that mitochondrial and Y chromosome DNA are useful for finding out whether two people are distantly related, but what makes these types of DNA better than regular DNA for learning about someone’s ancestry?
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September 20, 2016: I just had a DNA test done and it came back that my paternal Y-DNA was the rare haplogroup T.  Can you tell me more about the T haplogroup?
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August 10, 2016: Is there mitochondrial DNA in human fingerprints? If yes, can it be used to identify a human being?
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March 30, 2016: I belong to 23andMe (DNA testing site) and have always wondered why it said I am more likely to have blue eyes. They use SNP: rs1393350 where I am a GG and rs12896399 where I am a TT. However, I have dark green eyes. Why do my SNPS that determine eye color basically say I should have had blue eyes when I clearly do not?
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