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The process of DNA melting can be monitored by a change in ___________

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The process of DNA melting can be monitored by a change in ___________

(a) absorbance

(b) pH

(c) concentration

(d) color

The question was posed to me in an interview.

My query is from Genome Structure in portion Nature of Genome of Cell Biology

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Right answer is (a) absorbance

For explanation I would say: DNA melting is the process where DNA is dissolved in saline solution and the temperature is increased to initiate the process of separation. When DNA separates into its component strands, the absorbance of dissolved DNA increases and this serves as a parameter for monitoring the process.

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