Relatedness

1 - 10 of 51 Answers

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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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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April 22, 2016: I am a woman with two half-sisters and a half-brother. My half siblings are full siblings to each other. We share the same father and different mothers. Is it likely I am more related to my half-sisters than my half-brother?
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March 15, 2016: My cousin (who is 6 months older than me) and I are in love with each other. I heard that there may be a chance of genetic disorders in the next generation if we both marry. Actually his father and my grandmother are brother and sister.  My cousin had a problem with his eye...not a very big problem but one of his eyes is smaller. Now if I marry him is there any chance of happening the same thing to my next generation?
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January 7, 2016: What is the best test for showing that two people are half siblings if only the two half siblings are available for testing?
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April 15, 2015: As a female, I am wondering how I am genetically related to my paternal grandfather. Since he gave my father a "Y" chromosome and I do not have one, is there other genetic information passed down in other forms?
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