I'm an RH Negative blood type. Does anyone know much about that?

I've heard all sorts of myths and stories about why only a very very few have it. From part ๐Ÿ‘ฝ to part angle. One article I read said you must have green or grey eyes to be RH negative. The eye one the right is my real eye un-photoshopped. I have pure grey eyes.
I'm an RH Negative blood type. Does anyone know much about that?
I'm an RH Negative blood type. Does anyone know much about that?
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