[Ti] (OT) OSX Linuxbaserad?

[Lisbeth Zachs]

I'm following an online course in basic knowledge of Firewall handling.  
It covering mostly PC but Mac appeared with  a statement that OSX was  
Linux based. When one of the fellow students questioned that statement  
the tutor answered
<quote>
Jaguar (OS X) version kernal is under the GNU public license, so it's  
fair to say the kernal is Linux based. </quote>
I assume he is right to the fact that that the kernal is under GNU but  
does that justify the conclusion that it is Linux based? I have simply  
thought it as UNIX-based and I don't care either way I'm just a bit  
surprised and would like to know if you agree with the tutor or not?  
Thank you for your insights.

Lisbeth in Gotheburg
<http://homepage.mac.com/holisticum/Current_picturers/ 
PhotoAlbum53.html> Spring 030331
<http://www.got-a-mac.org> medlemssida för Got-a-Mac (Mug in Gothenburg)