4(b) INHERITANCE · EXAM QUESTIONS

4.26 Sex chromosomes

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  1. 01StateShort answer2 marks

    4.26 Sex chromosomes

    Exam question

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    State the sex chromosomes of a human male and a human female.

    (2)

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    Total for this question: 2 marks

  2. 02WhichMultiple choice1 mark

    4.26 Sex chromosomes

    Exam question

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    Which chromosome is found only in males?

    (1)
    Choose one answer

    Total for this question: 1 mark

  3. 03ExplainShort answer2 marks

    4.26 Sex chromosomes

    Exam question

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    Explain why all eggs carry an X chromosome.

    (2)

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    Total for this question: 2 marks

  4. 04ExplainShort answer2 marks

    4.26 Sex chromosomes

    Exam question

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    Explain why half of sperm carry an X and half carry a Y.

    (2)

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    Total for this question: 2 marks

  5. 05CompareShort answer2 marks

    4.26 Sex chromosomes

    Exam question

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    Compare the X and Y chromosomes.

    (2)

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    Total for this question: 2 marks

  6. 06StateShort answer1 mark

    4.26 Sex chromosomes

    Exam question

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    State how many of the 46 human chromosomes are sex chromosomes.

    (1)

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    Total for this question: 1 mark

  7. 07IdentifyShort answer1 mark

    4.26 Sex chromosomes

    Exam question

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    Identify the number of autosomes (non-sex chromosomes) in a human sperm cell.

    (1)

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    Total for this question: 1 mark

  8. 08SuggestShort answer2 marks

    4.26 Sex chromosomes

    Exam question

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    Suggest why conditions caused by genes on the X chromosome are more common in males.

    (2)

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    Total for this question: 2 marks

  9. 09ExplainShort answer2 marks

    4.26 Sex chromosomes

    Exam question

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    Explain why the father determines the sex of a child.

    (2)

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    Total for this question: 2 marks

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