Large increase in absorption of UV- radiation of 260 nm by melted DNA duplex is called
Position effect
Gaidukov phenomenon
DNA compaction
Hyperchromic effect
A
Gaidukov phenomenon
B
Position effect
C
DNA compaction
D
Hyperchromic effect
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Solution
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The increase in the absorbance of a material is known as hyperchromicity and the effect is known as the hyperchromic effect.
The DNA molecule gets denatured by the hyperchromicity.
The absorption of UV radiation by DNA molecule increases when the two single DNA strands get separated by heat or by a heat denaturant or by changing the pH level.
So, the correct answer is 'Hyperchromic effect'.
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