Another regarding gender expectations is the recent news that a (maybe more than 1?) Japanese medical school's admissions staff were rigging standardized test scores to disfavor women applicants. This is because they were seen as less reliable / career-oriented or productive (or whatever justification) for not favoring them to receive the education that men deserve.

Expectations.

This wasn't a case of gender discrimination. It wasn't a requirement that girls have black hair specifically, but that students do. The issue is the assumption that black == natural, which for people who aren't ethnically Japanese may not be the case

It isn't an irrational bias thing. Women in Japan are pressured to stay at home to take care of the kids, so they're less likely to work as much as a men.

Bias is bias. Not to mention this can cause vicious cycles where women don't progress in their career due to a perception they'll become homemakers -> are pressured to work less because the career is going nowhere -> continue to not progress.

There was a ban on unnatural hair colours. A foreign student was told to dye her hair black.