NEET · Biology · STD 12 - 10. biotechnology and its application

Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complimentary \(DNA\) in a clone of cells, followed by its detection using autoradiography because :

A mutated gene partially appears on a photographic film.
B mutated gene completely and clearly appears on a photographic film.
C mutated gene does not appear on a photographic film as the probe has no complimentarity with it.
D mutated gene does not appear on photographic film as the probe has complimentarity with it.

Verified Solution

Answer & Solution

Correct Answer

(C) mutated gene does not appear on a photographic film as the probe has no complimentarity with it.

Step-by-step Solution

Detailed explanation

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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