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About sks_bc

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  1. Why do some humans have extra ribs?

    I was born in 1962, long before we were using cell phones and I have not only 1 extra set of ribs (cervical), found during a recent Xray, but I also have a set of small 'nub' ribs as well, 4 in all. I also have RH Neg blood. My mother, who also had RH Neg blood, also had 1 extra set of ribs (cervical).