Not Theory-History
Why did you put quotes around the word jews? Is this the update to "some of my friends are Jews" that usually means the opposite? Mengele did not succeed, one experiment involved injecting blue dye into the eyes of concentration camp internees. If you read the history of NAZI Germany and the genocidal plans to wipe out all Jews then you should have come across references about the stress on aryan purity and the classifications of "lesser" races.