I don't think evolutionists can prove common origin anymore ~ they could back before we knew about DNA and began building a genome library and anayzing it.
Actually, thinking about it, the evolutionists pretty much stuck to the higher animals and plants ~ before they knew about DNA ~ and they came up with some pretty fanciful ideas. This business of humans being apes is one of them ~ because, as it turns out, we have some chemistry in us that dates to when EVERYBODY like us was still a monkey ~ but today's apes, and the more apelike advanced monkeys do not have that chemistry.
Raises a real good question about how we could have ape ancestry when only monkeys have that part of our ancestry, and the apes don't, and vice versa.
We cannot have a common ancestry with apes while at the same time missing some of the more serious ingredients in ape makeup ~ and here we're not talking about gross physical attributes ~ but things that make the kidneys and livers work, or help us hold our meat together! I think that last one ~ the adhesives is the most important ~ we got monkey glue~!
At some point in time the Darwinists are going to have to admit they are frauds. The proof is pointing the other way.