Well if race has biological basis and also if race is inherited, there is no way around a genetic basis. Also there is a more than hundred year history of scientific research and no genetic (or other) grounding for race has been found. So yes, that is the source of my bias.
> False. Diet and behavior affect biology amongst other things.
Yeah, so if a South-Asian orphan is adopted into a Swedish family, he magically ceases to be of whatever race were his parents and becomes white. That's... not how the concept of human race works.