No. Sega Genesis games can only be played on a Sega Genesis or Sega Nomad, and some other consoles with Genesis compatibility.

yes

Genesis, Saturn failed

But Sega Saturn had 18X games in Japan.

The Sega Genesis Model 2 is just a compacter (smaller) version of the Sega Genesis. So yes it can

Lets say it like this : Sega Genesis (phat) = model 1 and The Sega Genesis (slim) = model 2

Hope i helped

No, you cannot !

Directly from the Sega Saturn manual:

"You cannot use Genesis, Sega CD, or Genesis 32X games or peripheral equipment with your Sega Saturn."