What I've seen, atleast with horse genetics, a Chimera is when two offspring with different phenotypes fused to create one offspring showing BOTH phenotypes, like a Bannana that has large patches of lesser coloring.
A "paradox" (I can't remember the horse version's name(Somatic mutation is the name I think???) is where in a section of skin/hair, a gene turns off, so a patch of NORMAL coloring is shown. So if you have a Champagne with a large patch of normal coloring.
So this is a chimeric horse (trying to find a non bay example was impossible) He's nearly even in where's brown and where's black, most likely a fusion of twins.
A Somatic or Paradox horse is this. He has a small section where a gene has turned on, his front leg area is grey while the rest of him is bay.
Does that help at all? I started with genetics in horses, so that's where I get most of my info from.
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