<h1>what is MicroRNA?</h1>

<p>A&nbsp;<strong>microRNA</strong>&nbsp;(<strong>miRNA</strong>) is a small non-coding RNA&nbsp;molecule (containing about 22 nucleotides) found in plants, animals and some viruses, that functions in RNA silencing&nbsp;and post-transcriptional regulation of gene expression. miRNA are encoded in the genome as segments of longer transripts. their characteristic structure helps identify them and predict the target genes they might regulate.&nbsp;</p>