Why is DNA molecule more stable genetic material than RNA? Explain.

DNA is more suitable genetic material over RNA . Why?

How is the DNA better genetic material than RNA?

List the criteria that can act as genetic material must fulfill. Which one of the criteria are best fulfilled by DNA or RNA thus making one of them as better genetic material? Explain.

Recall the experiments done by Frederick Griffith, Avery, MacLeod and McCarty, where DNA was speculated to be the genetic mnaterial. If RNA, instead of DNA was the genetic material, would the heat killed strain of Pneumolcoccus have transformed the R-strain into virulent strain? Explain.

RNA was first genetic material, DNA evolved later on. Explain.

Why is the DNA molecule compared to a spiralling staircase?