Race, Ancestry, and Relatedness

1 - 10 of 75 Answers

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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May 12, 2016: My mother and I both had DNA tests and our results turned out a bit different. She is related to someone as a 4th-6th cousin and I am not. Since she is my mom, shouldn’t we both be related to her?
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