1 Set of hunches. 2  If a theory is a set of hunches, it means we arenât yet sure we have the answer. 3  Theories always involve an element of speculation or conjecture. 4  A theory is not just one inspired thought or an isolated idea.  A theory offers some sort of explanation.
Uracil is paired with thymine in RNA and it is paired with Adenine in DNA. In DNA transcription (from DNA to RNA), uracil pairs with adenine. in regular DNA replication adenine pairs with thymine.
The substitution of Uracil in Rna [instead of â¦ Thymine] has the same effect-improved spacing; it most likely provides a 'unique identification' function as well, all those Dna and Rna polymerases need to have some way to direct them to their appropriate Job Sites.