![]()
0 Comments
![]() ![]() Half of the human genome can also be found also in virus DNA.įor a virus to be dangerous, it needs to have evolved together with its victim and made evolutionary use out of hurting it. Still, we all get along very well! That's because all life on Earth has the same origin and is very closely related to each other. They have such a large diversity that most of the (few hundred) virus "families" who had their genome mapped, are lone members of their families. There are about 10^31 virus particles in Earth's global biosphere. And some proteins are 30,000 amino acids long. The median length of a protein on Earth is about 300 amino acids. Life on Earth uses 20 amino acids (out of about 400 considered chemically potential alternatives). Viruses only attack certain bacteria because of proteins on their surfaces extraterrestrial biology most likely differs from that on Earth, and these viruses might not be equipped to harm terrestrial organisms.Įven if a virus came to Earth from space, it would likely be harmless to life on Earth. This also means that they might not be a huge harm to creatures on Earth. This means they would have to be carried along by an extremophilic bacteria. Viruses pose an additional challenge because they cannot survive long without a host organism on which to live. This may be possible - bacteria have survived in conditions like there - but difficult. Space contains temperatures ranging from hundreds of degrees Fahrenheit to hundreds of degrees below zero, and any organism would have to survive those. Panspermia is traditionally applied to bacteria known as extremophiles, which are accustomed to living in harsh environments. ![]() However, materials related to organic matter have been found that might be evidence of panspermia see Bell et al.
|
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |