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With some doppelgangers, there might be more to the idea than meets the eye. A team of Spanish scientists studied pairs of unrelated look-alikes and found that they not only bear a striking resemblance to each other, but also share significant parts of their DNA.
Not A Clone: Identical Twins' DNA Not Really 100% Identical KEY POINTS A new study found that their DNA may not be as identical as previously thought Identical twins' DNA differ by an average of 5.2 mutations, researchers found Some identical twins may look like clones of each other, but a new study has found that they may not actually be as identical as they seem. Unlike fraternal twins, who developed from separate fertilized eggs (zygote) and therefore share half of their genes just like regular siblings, identical twins develop from a single fertilized egg that separates into two. B...