Not sure why color blindness would differ - although I know that color  
blindness can offer career benefits or drawbacks.  My father and his  brother 
were color blind.  Neither could see cherries on trees, had the  usual 
problems with stop lights.  However, in WWII military wanted them for  analyzing 
photos  - seems that 
camouflage on/over things like tanks doesn't work.  Their step-brother  was 
severely color-blind.  He dropped out of medical school when he  realized 
he couldn't tell blood from other fluids.  Ended up in  electronics, but had 
to memorize the pattern sequence for color-coded bands on  resistors - 
always had an assistant.
 
I don't know about beekeepers, but in terms of my own personal life and  
research scientists, I'm surrounded by a high proportion of left-handed  
individuals - my wife, my brother-in law, two of my three research partners.  
many of the students who work with us.  There are days when the number of  
lefties outnumbers those of us right-handed folks.   Jerry

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