Researchers Who Have Studied Colour Blindness and Colour Deficiency Have

question 35

Multiple Choice

Researchers who have studied colour blindness and colour deficiency have found that:

• A) colour deficiency is more frequently found in Aboriginal men than in European men.
• B) colour deficiency is more frequently found in women than in men.
• C) total colour blindness usually occurs when cones of the retina are absent or malfunctional.
• D) total colour blindness is extremely rare in animals species.