Not just "missing"...which could more easily be mere coincidence...but mutated exactly the same way. Why would an intelligent and benevolent God put the same mistake into both our genetic codes, making the gene non-functional for us both.
"Why would an intelligent and benevolent God put the same mistake into both our genetic codes,"
I believe in God. I just think He is smarter than the creationists.
As to being benevolent, God was just establishing the basis for the orange juice industry. Pretty benevolent, eh?