Why is DNA considered a better genetic material ?                         (2 marks)

DNA is chemically less reactive and structurally more stable than RNA. In RNA 2'-OH group is present in pentose sugar that makes it more labile and easily degradable. In DNA thymine is present instead of uracil that makes it more stable. RNA mutate at a faster rate than DNA. RNA can directly code for the synthesis of proteins. DNA however, is dependent on RNA for synthesis of proteins. As DNA is more stable so it is a better genetic material.

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