DNA repair: practice question

A Biochemistry question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Biochemistry · DNA repair

Sample item

Mismatch repair defects increase risk of what syndrome?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

B. Lynch syndrome

This item reviews DNA repair; Lynch syndrome is the best answer because it directly fits the mechanism or morphology described.

Option by option

  • A. Down syndrome

    Down syndrome is plausible but is not the best fit here.

  • B. Lynch syndrome (correct)

    Correct. Lynch syndrome is supported by the defining finding.

  • C. Turner syndrome

    Turner syndrome is not supported by the stated finding.

  • D. Marfan syndrome

    Marfan syndrome does not match the key mechanism or pattern.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More Biochemistry questions

Questions about this Biochemistry question

What is the answer to this Biochemistry question?

The best answer is B, Lynch syndrome. This item reviews DNA repair; Lynch syndrome is the best answer because it directly fits the mechanism or morphology described.

Why is "Down syndrome" not the answer?

Down syndrome is plausible but is not the best fit here.

Why is "Turner syndrome" not the answer?

Turner syndrome is not supported by the stated finding.

Why is "Marfan syndrome" not the answer?

Marfan syndrome does not match the key mechanism or pattern.

What concept does this question test?

It tests DNA repair in Biochemistry. The correct option holds because: Correct. Lynch syndrome is supported by the defining finding.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study DNA repair?

Build one table of enzyme deficiency, disease, inheritance and key finding, then revise it by spaced recall. Then use the flashcards and the other Biochemistry questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.