WAEC Biology 2013 Objective — Question 52
Question 52 of 60 from the West African Examinations Council (WAEC) Biology 2013 Objective paper, with the correct answer and a full explanation.
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A gene that is only located on the X-chromosome is said to be
- A. expressed in females only
- B. defective
- C. sex-linkedCorrect
- D. expressed in males only
Explanation
A gene that is located on the X-chromosome is said to be sex-linked. Examples of characters that are controlled by sex-linked genes are baldness, haemophilia and colour blindness.
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