Relatedness

11 - 20 of 53 Answers

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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March 25, 2015: I am an identical twin. What percentage of genes do my children share with my twin sister's children?
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January 13, 2015: My cousin and I have dads who are brothers and mums who are sisters. We like to call ourselves double cousins or half-sisters. How closely related would we actually be?
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December 16, 2014: My mother who recently passed away was adopted at birth and I have been searching for her biological family.  I recently received my results from Ancestry DNA and was matched with a gentleman it says is likely my first cousin.  He is 83 however and I'm 30 so it seems like the age might be a little off for that to be the relationship.  I'm just curious if it's possible for them to mistake him for a first cousin when there is a different relationship?  Is it possible for him to instead be my mother’s sibling, my uncle?  What other possible relationships could it be if any?
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October 22, 2014: What are the chances a baby will come out looking more like the father or getting more of the father’s genes?
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September 16, 2014: I am a docent at Ano Nuevo State Park, the Elephant Seal Rookery, and I am trying to find out what percentage of DNA humans share with seals. Do you have a rough idea of what percentage that would be? 
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September 9, 2014: If two kids have same dad but their moms are sisters and the sisters are from same mom and dad, are the kids full siblings or half? And how can we explain to them that they're not cousins but siblings?
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September 3, 2014: I am interested in finding out what genetic testing could possibly tell me about my father. I have a brother (shared maternal, different paternal) who will be tested as well. In reading through other responses I understand statistically we should be 25% related. Would the differences in our testing isolate the DNA I inherited from my father vs the differences we get from our shared maternal line mixing?
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February 12, 2014: I am a dog breeder and the question of line/inbreeding comes up often with fellow breeders. Here is my question—"Is there more chance of genetic flaws, undesirable diseases, etc. in mating a Mother to Son versus Father to Daughter?" Several breeders believe there is with a Mother to Son mating because of the X chromosome carrying more DNA.
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