Race, Ancestry, and Relatedness

1 - 10 of 76 Answers

November 9, 2017: My husband just learned who his birth parents are. Unfortunately both are deceased. The birth father’s family wants my husband and the last surviving sibling (an aunt) to be tested to make sure the birth mother named the right guy! I understand the test they need is called an avuncular test. Is there a specific type of lab that we can use to make sure they are testing enough and properly to try to achieve the most conclusive result, whichever way that goes? There are so many types of labs on the web...
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August 24, 2017: My sister and I did ancestry.com and she was put into a genetic community and I was not. Does this mean we are not as closely related as we think?
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August 2, 2017: My brother and I recently used the DNA testing company MyHeritage and the results said we shared 38% of our DNA. We are confused because we thought full siblings shared 50% and half siblings shared 25% of their DNA. Why are we right in the middle?
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May 17, 2017: My twins each did a 23andMe DNA test and the results verified that they are identical; however, their ancestry composition is not! How is that possible if their genomes are identical?
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April 13, 2017: My sister and I had our DNA tested. We were raised with the same mother and same father - both are deceased. There has been talk in the family that we have different fathers. Our ancestry test came back similar; however, we are not sure how much difference there should be in the percentages. For example: I am 50% Great Britain my sister is 39%, I am 10% Scandinavia my sister is 28% and other differences are 1 - 3%
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January 31, 2017: My ethnicity results state I’m 51% Italian. Would both of my parents need to be Italian? If neither parents are 100%? 
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January 17, 2017: How likely is a test from 23andMe or Ancestry.com to see if two people are third cousins? What about fifth cousins?
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January 4, 2017: Is there any way to tell if someone is the product of incest like father/daughter by just looking at their DNA? Not testing the parents?
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June 15, 2016: Can my brother's son (my nephew) and I share less than 25% DNA? We were both tested and it shows us sharing 16% of our DNA which the test says makes us first cousins.
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May 24, 2016: Neanderthal DNA analysis has shown that they were very in-bred. Has the DNA of Homo sapiens shown that they too were very in-bred and if so when did in-breeding stop?
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