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Sciences > Molecular Biology Molecular biology techniques: RNA interference: 1 of 4

Introduction: RNA interference, also known as RNA mediated interference or in short RNAi, is a mechanism of regulation of gene expression by certain RNA molecules such as miRNAs (micro RNAs), siRNAs (short interfering RNA/silencing RNA) etc. MicroRNAs are small single stranded RNA molecules of about 20-24 nucleotides in leng...
Sciences > Molecular Biology To what extent does the RNA world hypothesis stands true?: 2 of 4

The RNA world hypothesis is a theory that proposes the existence of a RNA cell (ribocyte) before the modern cells were evolved. The properties of the RNA to act as a genetic information storage molecule and as a catalyst, like proteins (enzyme) make the idea of RNA world conceptually possible. The discovery of reactions such...
Sciences > Molecular Biology The diverse functions of DNA rearrangement: 1 of 1

DNA rearrangement is a phenomenon that involves the alteration of the basic genome sequences and results in diverse activities such as the regulation of gene expression, development, generation of antibody diversity etc. The role of DNA rearrangements is observed to be especially predominant in lower eukaryotes, which usuall...
Politics, News & Issues > Food & Agriculture Apomictic plants: A new hope for the poor farmers?: 1 of 1

Apomixis is an asexual (agamic) reproduction which results in a progeny that is genetically identical to their parent plant. An alternative to the apomixis is the sexual reproduction or amphimixis. Both the apomixis and the sexual reproduction events take place in the ovule, which is the precedent to the seed. When apomixis ...
Sciences > Biology (Other) The role of pre-existing cellular structures in the formation of new cellular structures: 1 of 1

Extensive developmental studies have been shown that the pre-existing cellular structures play a key role in the formation of new cellular structures. Various processes such as homonucleation, heteronucleation and allosteric transitions are observed to involve in the developmental phenomenon. The studies on the development o...
Sciences > Molecular Biology The diverse functions of RNA: 8 of 8

The three most prominent roles of RNA are that of mRNA, tRNA and rRNA. Apart from these RNAs there is another class of RNAs referred as noncoding RNAs (ncRNAs) that perform a variety of functions such as in gene expression/regulation, protein synthesis, modification of macromolecules in particular RNA and cleavage of other R...