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NEET BIOLOGYHard

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 :

1

mutated gene partially appears on a photographic film

2

mutated gene completely and clearly appears on a photographic film

3

mutated gene does not appear on a photographic film as the probe has no complementarity with it

4

mutated gene does not appear on photographic film as the probe has complementarity with it

Step-by-Step Solution

In autoradiography, a radioactive probe is used to detect a specific DNA sequence. If the gene is mutated, the probe will not be able to hybridize with it due to lack of complementarity. Therefore, the mutated gene will not appear on the photographic film.

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