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.

Question

Quizplus · Accepted Answer

Colour deficiencies are often linked to the X chromosome, which is why they are more common in males, who have only one X chromosome, compared to females, who have two.

Why Do Researchers Believe Colour Deficiencies Often Have Genetic Causes