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July 11, 2012: Is there any explanation as to why a brother and sister cannot have boys? My sister in law has only been able to have girls and my husband and I can't get pregnant with a boy.
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February 16, 2012: Is it ever possible for a person or an animal to have one biological parent rather than two?
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August 31, 2011: Why do zebras have two different colors (black and white)? What color is dominant or recessive?
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June 22, 2011: I've had a hysterectomy but my daughter wants to harvest her eggs for me and my husband so we can have a child of our very own! If I use my daughter's eggs, can HER father's DNA be removed from the egg, leaving only my DNA? Then when my husband fertilizes the egg, it'll be 100% our child together. Is that possible?
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June 14, 2011: Do clones have anything in common other than the way they look?
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April 27, 2010: Is it possible to create a gene of wings and literally put them in the DNA of a human?
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April 7, 2010: As a geneticist, what do you think of the Starchild skull? In case you don't know, this is the 900 year old skull found in Mexico that might be half alien and half human.
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March 23, 2010: Can a person carrying a Y chromosome carry and give birth to a child?
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January 7, 2010: What is science?
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March 12, 2009: I saw a clip on AOL Amazing Births that I believe to be next to impossible. The photo was of a couple in England that has had two sets of twin girls. The mother is a fair haired redhead. The father is a black man. The oldest girls look to be about 7 years old, one is a fair skinned redhead, and the other is a black girl. The second set of twins again has one fair skinned redhead and one black child. What is your opinion of the possibility of this happening, and if it is possible, what would be the chance?
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