no it comes from the NeXt/openstep core
http://www.kernelthread.com/mac/osx/history.html
It would be an understatement to say that OS X is derived from NEXTSTEP and OPENSTEP. In many respects, it's not just similar, it's the same. One can think of it as OpenStep 5 or 6, say. This is not a bad thing at all - rather than create an operating system from scratch, Apple tried to do the smart thing, and used what they already had to a great extent. However, the similarities should not mislead you: Mac OS X is evolved enough that what you can do with it is far above and beyond NEXTSTEP/OPENSTEP.
while the mach and machten setup was a lot of fun and ran inside your older macs classic environment its not where OSX was founded.
If no-one gives your an answer to a question you have asked, consider:- Is your question clear.- Did you ask nicely.- Are you showing any effort to solve the problem yourself