Q.Write any two differences between DNA and RNA.

Any candidate genetic material must satisfy three properties: self-replication, structural and chemical stability, and the ability to mutate, while also being expressible as observable characters. Both DNA and RNA can self-replicate via complementary base pairing, which proteins cannot do at all. DNA is markedly more stable than RNA because every RNA nucleotide carries a reactive 2'-OH group that DNA's deoxyribose lacks, making RNA more chemically reactive and prone to degradation; DNA's use of thymine instead of uracil adds further stability, and because DNA is double-stranded and complementary, damaged DNA can often be repaired or renatured after denaturation, a resilience RNA generally lacks. Both nucleic acids can mutate, but RNA's greater instability means it mutates, and therefore evolves, faster than DNA, which is why RNA viruses with short life spans tend t …