This fallacy bases it's argument on the origin of the argument. This one is popular in political circles. Donald Trump said it; therefore we know it's crap. Hillary Clinton said it, so it must be evil. While I don't like to accept anything Donald Trump says at face value, it isn't wrong just because he said it. For example, like him or not, heck, like Hillary or not, he was kind to her back at the debates when he said she was a fighter and not a quitter. I don't necessarily agree with everything Hillary says or does either, but she is a fighter. I had definite reservations about her being president. This isn't about her politics, or his. What this is about is that no matter how you feel about someone, they may have a valid point. Dismissing a valid argument because the person with the idea is an enemy or you don't like them, is a fallacy in itself. His point, in this case, was valid and true. I cannot dismiss it just because he says it.
This one is difficult at times. Donald Trump, in my opinion, is a bigoted misogynist. I don't trust most of what he says. That said, I can't dismiss an argument just because he says it. I fully believe that we should validate, research, and explore his (or anyone's) arguments before believing them as fact. I also believe that we shouldn't believe anything based upon origin, either. People shouldn't believe everything anyone says. Not even our parents or friends. I mean, look at the whoppers our parents told us in childhood. ;) I love my dad, but basing an argument on things he says could be dangerous. He tells a great story. That doesn't mean they are 100%true.
People are often wrong, and often right. We are fallible, and should investigate all claims. Accepting or denying claims based upon the genetic origins is ill advised.