11 - 15 of 15 Answers
February 2, 2007:
I have two identical twin male cousins, let's call them Cousin A and Cousin B. Cousin A is able to have children but Cousin B is not. If Cousin A was to donate sperm to Cousin B's wife, would the child share the same DNA as Cousin B? Would the child have some of the same traits as Cousin B (such as hair, eyes, and height)? Would a paternity test be able to distinguish if Cousin A or Cousin B is the father?
October 13, 2006:
It seems to me that there are a lot more twins around these days. Is this true? Do scientists know why this is?
September 16, 2005:
Why do identical twins have physical differences if they have the same DNA?
January 26, 2005:
My father is an identical twin and my husband's grandfather is a fraternal twin. Does this increase our chances of having twins, or is the genetic trait only on the mother's side and only for fraternal twins? (P.S. we've always hoped for twins - a boy and a girl.)
November 10, 2004:
My students want to know: if identical twins have the same DNA, what happens if one of them commits a crime and leaves only DNA evidence at the crime scene; like a hair or something? How could you tell which twin did it?
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