[AlotOfReading]

It's ancestry specifically that has an effect on incidence of colorblindness, and ancestry is necessarily correlated with cultural background. Northern European populations have some of the highest rates in the world at around 7-9% for males, whereas pacific indigenous populations tend to have rates around 2% for the same.

Of course, color perception is heavily influenced by cultural background too and ties into this in complicated ways, but color deficiency tests are deliberately robust to that.

[worthless-trash]

Yep, genetic heritage I absolutely can believe.

I'm red/green blue/purple colorblind (male, common), my mother is red/green colorblind, (female, uncommon) my grandmother has Tetrachromacy (female, very uncommon).

I had thought for a moment, that there may have been some "cultural link" that would allow me to not pass this on to my children.