From a reader:

Hi Jonah,
As a neurobiologist / psychobiologist, I have no doubt that genes do
play a role in creating those broad aspects of personality and
temperament that predispose us toward one pole or the other. And this
report is by no means the first evidence of that: The Minnesota Twins
study has found that monozygotic twins are more likely than dizygotic
twins to share voting patterns. But perhaps the best evidence is the
gender divide in voting patterns– Women in the U.S. vote generally
vote for Democrats. What would cause that pattern to occur, unless it
was biology?
On a more general note, when someone says “culture plays a role”, my
instinct is always to ask whether biology may have played some role
in shaping the culture. For example, if there is sexism about women
in the hard sciences like physics, could that not reflect something
real about the world? Its not as though someone, a long time ago,
flipped a coin and decided that women, not men, would be the victims
of discrimination based on their spatio-analytic abilities.