The Martians have a bit of a Vulcan look to them, and it’s referenced that their genetics can be found in a number of races known to the Federation. Is this a hint that Spock might in fact be descended from Martians, in reference to his original conception as a Martian science officer?

Might be supported by Spock’s mention in TOS Return to Tomorrow that being descended from an alien race is consistent with some Vulcan prehistory.

Or I’m reading too much into a basic makeup choice.