Linkage and Recombination

1 - 8 of 8 Answers

March 29, 2017: Can someone be born with the sickle cell trait from a white mother who has Rh- blood?
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June 16, 2015: I know that crossing over can happen along chromosomes, but can crossing over happen inside genes themselves? It seems from what I have read that it can’t.
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March 13, 2014: Is there a genetic link between lactose intolerance and alcohol intolerance?
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April 24, 2013: I have identical twin daughters, one of whom has recently had a baby.  The question now puzzling us is - could the baby's aunt theoretically ever have been her mother? In other words, are the 2,000,000 eggs created by identical twin girls the same or ever the same?
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May 31, 2012: I was speaking to a friend of mine about the fact that mitochondrial DNA (mtDNA) is passed on only through the mother. But he told me that this theory was now being challenged. He said that new research says that the father also passed on his mtDNA  to the child. This was news to me. Is this true?
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May 14, 2009: How come blue became the most prevalent eye color/gene in northern Europe, despite being a recessive gene and one that was introduced only about 10,000 years ago?
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July 14, 2006: Is it possible, through mutation, for two blood type O (OO) parents to have a non type O child? Along the same lines, it is possible for mutation to account for any blood type in a child or are there limitations on which mutations are possible?
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September 30, 2004: I thought I heard a geneticist on TV say that the gene that creates blond hair also creates blue eyes, and I thought he suggested that only blonds have blue eyes - is this correct?
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