RNAs are the direct products of genes, and these small RNAs can bind to other specific messenger RNA (mRNA) molecules and either increase or decrease their activity, for example by preventing an mRNA from producing a protein.
What causes stretch marks? Stretch marks are caused when the skin rapidly stretches as a result of sudden growth or weight gain. The stretching causes the middle layer of skin (dermis) to tear, allowing the deeper skin layers to show through, forming stretch marks. The dermis contains strong, inter-connected fibres that allow your skin to stretch as your body grows.
wikiHow to Get Rid of Stretch Marks. Six Parts:Verified Topical OptionsUnverified Topical OptionsSupplemental OptionsLaser Treatment OptionsSurgical OptionsKnowing What Doesn't WorkCommunity Q&A. Stretch marks can occur during sudden changes in body size, such as during pregnancy, puberty, or rapid weight-gain. Ninety percent of pregnant women will get stretch marks around their abdomen, hips and thighs, and unfortunately, they seem to be genetic â if your mom had stretch marks, odds are that you will too.