Quote:
Originally Posted by karice67
Actually, you could be closer to your sibling, but you could also be further apart. Anyone is guaranteed to have half of their parent's DNA, but theoretically, a person can range from being 100% identical (identical twins) to not sharing DNA at all with a sibling (highly highly unlikely), though chances are that around half their DNA will be the same.
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Yes and no. The DNA that you're referring to is what is
expressed in the individual. But siblings still have identical genetic makeup. They just have different genes that are 'activated,' so to speak. That's why you can have a child with different hair or eye color from both of his parents; the trait might not be expressed in the parents but it exists somewhere lying dormant in their genes from some other ancestor.