What is unique to DNA alone?

Denaturation and renaturation

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Polymer complex

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Replication

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Resistance to temperature changes

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Solution

The correct option is C Replication
DNA has a unique property of replication. Replication is the process of making the copies of DNA from original DNA. It is unique in DNA.
Denaturation is the phenomena where the biomolecules like nucleic acid and proteins lose its structure at high temperatures. Renaturation is the phenomena of the forming the chemical bonds for reconstruction of the original structure of biomolecules. It takes place in DNA and protein.
Polymerization is the process by which the simpler unit known as monomers attaches with the help of chemical bond to form a long chain or branched structure. It helps to produce new chemicals. It is a process of joining repeating units to form a macromolecule is known as polymerization. For example, proteins are building blocks of the body and in DNA polynucleotides join to form a chain of DNA.
Resistance to temperature changes is the ability to withstand high temperature. It is present in protein as well as DNA. Thermostable protein can be at 80 $^{o}$ C.
So, the correct answer is option C.

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