What is Daltonism?
Correct answer: Colour blindness

Greygranite
Player #53553731, once again the picture helped!!

Hirad
Greygranite, I always look at the pics they always help

Myffa
This fails to mention it was named after the Manchester (UK). scientist John Dalton (1766-1844) who had the condition and made meticulous studies of it. After death his eyes were removed and preserved. They and 'll his notes are now in the Museum of Science and Industry. Manchester where a 1995 DNA test confined he had the gene

Myffa
(continued) John Dalton lived in Manchester and after his death his eyes were removed and preserved. They are now in the Museum of Science and Industry, In Manchester where a DNA test confirme

ccmomma
Hirad, not always

fatima
photo help

I am not a number.
Greygranite, how did it help? It is just all grey! (•‿•)