Tetrachromacy is a rare eye condition that allows for increased color vision. We’ll tell you about what causes it and how it’s diagnosed, as well as why you need to be skeptical of online tests.
And red/green color blindness isn’t less colors, you get more shades of brown.
Which sounds shitty, but invaluable for hunters.
My dad legitimately didn’t know what other people saw for “red” but he could spot a deer in the middle of the woods like it was neon yellow.
I believe the downside to tetracheomacy is less rods because the extra cones are taking up more space. Which I think translates to really bad night vision.
There’s very few things that are a flat negative evolutionarily.
Like sickle cell, in most of the world it’s a significant disease. But if you live somewhere with malaria before modern medicine, then for 99.9999% of human existence, you’d be dead at a young age without sickle cell in those places.
Or how appendix bursting was worth the risk of retaining gut bacteria. Once we got clean water, the adaption of not having an appendix started to spread. Until modern surgery took out the negative evolutionary pressure so humans will be stuck with appendixes for ever now.
And red/green color blindness isn’t less colors, you get more shades of brown.
Which sounds shitty, but invaluable for hunters.
My dad legitimately didn’t know what other people saw for “red” but he could spot a deer in the middle of the woods like it was neon yellow.
I believe the downside to tetracheomacy is less rods because the extra cones are taking up more space. Which I think translates to really bad night vision.
Cool! I had never heard about this theory for explaining color blindness.
There’s very few things that are a flat negative evolutionarily.
Like sickle cell, in most of the world it’s a significant disease. But if you live somewhere with malaria before modern medicine, then for 99.9999% of human existence, you’d be dead at a young age without sickle cell in those places.
Or how appendix bursting was worth the risk of retaining gut bacteria. Once we got clean water, the adaption of not having an appendix started to spread. Until modern surgery took out the negative evolutionary pressure so humans will be stuck with appendixes for ever now.