RNA is hypothesized to have been the genetic material of the original cell because RNA is double stranded while DNA is not. RNA is capable of catalyzing some chemical reactions like self-replication RNA contains uracil which is more stable than thymine RNA contains dideoxyribose sugars which are more stable All of the above Solution The correct option of the given question is (c), which is that the RNA contains uracil which is more stable than thymine. The answer will be more clear from the following elaborated answer. The RNA world hypothesis- the important points of this hypothesis is as follows:.