While it is relatively easy to define what a hurricane or earthquake is, defining a drought is more subjective. Droughts do not have the immediate effects of floods, but sustained droughts can cause economic stress throughout an area. The word drought has various meanings, depending on a person's perspective.
For the software package, see Partition function for Interacting RNAs. Piwi-interacting RNA (piRNA) is the largest class of small non-coding RNA molecules expressed in animal cells. piRNAs form RNA-protein complexes through interactions with piwi proteins.
Adenine is one of the four bases found in both DNA and RNA. These four bases are necessary for life. Adenine base pairs with thymine in DNA and uracil in RNA.These bases are â¦ called nitrogenous bases.denine is a purine derivative and one of the four constituent  bases of nucleic acids. Its chemical formula is C5H5N5. Edit. Share to: 1  5 Popular Protein Skimmer Reviews A protein skimmer is a device that filters microorganisms from the water in an aquarium.