How were viruse's 'created' ?

Question

We have all read about evolution, but how does something that is not living pop into existence having a fairly complex strand of DNA or RNA in it for no other purpose but being a transport device to infect another individual? Is it possible that they were created by someone?

Answer 1

they were created from certain germs or parasites that's transform into another species just like creatures on earth that became different from time to time.

Answer 2

It's arguable whether the virus is living. It tends to meet common sense standards but not many strict definitions. They were used in the work reported this week of the formation of embryonic stem cells from adult skin cells rather than from embryos. We are gradually learning the ecosystem value of the virus. Not all effects are harmful. They have been around long enough that the first could not have been created by any intelligent human agent that we know of. I can't rule out aliens. It is most likely that they came into existence the same way other lifeforms came into existence. An objective observer studying the complexity of life and the mechanism of DNA should find it implausible that it happened by accident rather than by design. It is at this point that reason generally departs the discussion, and it instead becomes a heated emotional debate.

Answer 3

Read up on transposable elements and retrotransposons.

These are strands of DNA that "parasitise" your genome, dwelling in it and - occasionally - replicating themselves and moving around. Evolutionarily, they have quite a sweet set-up, because they will be passed on along with the rest of your DNA when you reproduce.
However - add some proteins that can encapsulate the DNA (or RNA) strand, and a mechanism for leaving and entering cells - and hey presto! You have viruses.
Evolutionarily these are even better, because they can move between different organisms. But they risk being detected by your immune system and attacked - which transposons inside your cells do not.