Why Do Researchers Believe Colour Deficiencies Often Have Genetic Causes

question 84

Multiple Choice

Why do researchers believe colour deficiencies often have genetic causes?

• A)Colour deficiencies are more common among certain ethnic group.
• B)Colour perception changes somewhat as we get older.
• C)Colour deficiencies are more common in some cultures.
• D)More males than females suffer from colour deficiencies.

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