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I don't think it is accurate to say that some people's DNA is stronger than others, rather, some traits are more dominant than others. For example, darker features (dark hair, brown eyes, dark skin) are dominant over recessive genes (blond hair, blue eyes, etc). However, when two recessives are combined, that trait can be expressed which is why a couple with a darker person and a lighter person can end up with a blond haired, blue-eyed child. If both parents carry the genes for blond hair and blue eyes, the child could very well end up with blond hair and blue eyes, even though one of the parents is dark. It all depends on the genetics of family lines, which is why there are times when mixed-race couples have light children- if both parents carry the recessive genes for lighter features, there's a good chance they will be expressed. Not all traits fall into clear cut parameters of being dominant or recessive. Beyond what we know about which traits are dominant vs. recessive, everything else is pretty much left up to the genetic lottery- how genes are paired up, and which ones are randomly selected over others.

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14y ago

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