Eli5: why do woman get less of some mutation like color blindness?

Question

If one X chromosome is healthy and one is mutated, why does the healthy take control?

In: 8

Answer 1

I’m not certain but I was watching a doc about dogs and they said its theorized that dogs are colorblind because it helps with hunting. They don’t get distracted by colors and can focus in on subtle movements when prey is trying to hide.