Questions About Superheroes

• Many women in comicsland have parthenogenetic births (Power Girl, Ms. Marvel: check Wikipedia if you don't believe me). Which brings the question - Why Pre-Crisis Superman couldn't do it? He could do pretty much everything else.
• Why only Native American superheroes can summon animal totems? You never see a white trash kind of guy siccing giant raccoons on people.
  
• Why isn't there a Batman movie that features King Tut as the main enemy?