Question

DNA is preferred over RNA as a genetic material give three reasons

Answer 1

because DNA is more stable than RNA
DNAs tyrosine is more stable than RNA s uracil

Answer 2

Hi friend,
Here is your answer:
DNA offered several advantages over RNA so was chosen by natural selection to represent higher beings:1. DNA was chemically more stable than RNA so it was possible to maintain greater length of DNA in comparison to RNA.
 2.  DNA was more capable in handling self-repair during replication process due to the presence of Thymine instead of Uracil. 
3.      DNA also offers more information security because of the double helical structure.