First we will note the differences. Mendel’s most famous experiment focused on peas:
Mengele sewed gypsy children together.
Mendel probably never met his alter-ego, Mengele, a.k.a. “The Angel of Death,” SS scientist and fellow genetics researcher who escaped to Brazil after WWII. The likelihood of them meeting is greatly diminished by the fact that they weren’t alive at the same time…
BUT THE SIMILARITY IN NAMES– coincidence? I leave that up to you.