Question detail
Which of the following statements is true regarding human chromosomes?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reproduction
Question
- A. All 23 pairs control characteristics.
- B. 22 pairs control characteristics and 1 pair determines sex.
- C. Only 1 pair controls characteristics.
- D. All pairs determine sex.
Answer
The correct option is 22 pairs control characteristics and 1 pair determines sex.. This answer is correct because it matches the approved learning objective to state that 22 chromosome pairs control characteristics only and one pair determines sex in the subtopic Sex determination.
Explanation
The correct option is 22 pairs control characteristics and 1 pair determines sex.. 22 pairs control characteristics and 1 pair determines sex. is correct because it directly supports the approved learning objective to state that 22 chromosome pairs control characteristics only and one pair determines sex. This belongs to the subtopic Sex determination within Reproduction, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Sex determination.
Common mistake
Misunderstanding Chromosome Function
Students often confuse the role of the 22 chromosome pairs that control characteristics with the sex chromosomes, thinking all pairs determine sex.
Emphasize that 22 pairs are responsible for traits and characteristics, while only one pair (the sex chromosomes) determines sex.
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