Question

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29.
The Tm. of a DNA molecule, when measured in 0.15 M Nacl was 60°C. What will be its Tm compared to 60°C,
If measured in the presence of 0.15 M NaCl and 0.5 M Urea?
can u please explain ​

Answer 1

Explanation:

Answer is (A). It has Urea which favours denaturation. So it will denature the DNA molecule & thus it's Tm will become lower.