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[–]Fastandthecurious[S] 1 insightful - 5 fun1 insightful - 4 fun2 insightful - 5 fun -  (0 children)

Not saying there are no differences between sperm and egg ... all I'm saying is the differences exist because only sperm and egg can fuse and create a zygote. If it were the case that two sperm or two eggs could fuse and create a zygote too, then it would mean the differences between sperm and egg are arbitrary and could as easily occur between two eggs or two sperm.