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.
A DNA molecule is made up of deoxyribose sugar while RNA is made up of ribose sugar. A DNA molecule is double stranded whilst a RNA molecule is single stranded. A DNA molecule only contains the bases; Adenine, Thymine, Cytosine and Guanine.However a RNA molecule contains the bases; Uracil, Thymine, Cytosine and Guanine. DNA is only found in the nucleus of a cell, while RNA is found in the cytoplasm.owever a RNA molecule contains the bases; Uracil, Thymine, Cytosine and Guanine. DNA is only found in the nucleus of a cell, while RNA is found in the cytoplasm.