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Nella storia dell'evoluzione, le origini dei virus non sono chiare: alcuni possono essersi evoluti dai plasmidi, segmenti di DNA che possono muoversi tra le cellule, mentre altri potrebbero essersi evoluti dai batteri.

L'evoluzione per i virus è un importante mezzo di trasferimento genico orizzontale, il che aumenta la loro diversità genetica.

A virus is a small infectious agent that replicates only inside the living cells of other organisms.

Viruses can infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.

These viral particles, also known as virions, consist of two or three parts: (i) the genetic material made from either DNA or RNA, long molecules that carry genetic information; (ii) a protein coat, called the capsid, which surrounds and protects the genetic material; and in some cases (iii) an envelope of lipids that surrounds the protein coat when they are outside a cell.

The shapes of these virus particles range from simple helical and icosahedral forms for some virus species to more complex structures for others.

Los virus vegetales se propagan frecuentemente por insectos que se alimentan de su savia, como los áfidos, mientras que los virus animales se suelen propagar por medio de insectos hematófagos.

Por otro lado, otros virus no precisan de vectores: el virus de la gripe (ortomixovirus) o el resfriado común (rinovirus y coronavirus) se propagan por el aire a través de los estornudos y la tos y los norovirus son transmitidos por vía fecal-oral, o a través de las manos, alimentos y agua contaminados.

virus updating-9

Los virus infectan todos los tipos de organismos, desde animales, hongos, plantas, hasta bacterias y arqueas.Autorun Virus Remover uses proactive technology to permanently remove autorun& viruses, also it can block any autorun/viruses trying to infect the system via USB drives(pendrive, external hard disk, i Pod, etc).What you need to do is just clicking the scan button of Autorun Virus Remover.La maggior parte delle specie di virus possiedono virioni che sono troppo piccoli per essere visti con un microscopio ottico.In media il virione ha una dimensione di circa un centesimo della dimensione media di un batterio.




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