the L, on 16 December 2012 - 08:55 PM, said:
1.DNA is chemical that works in envoirment, so I wonder what organism gene would build on different envorionment? On another planet.
2.What also is mysterious how some simple lifes like rice plant have more genes then complexed life forms like humans?
3.What is for junk DNA? I heard about fish that dont have junk DNA...
4.Also I heard that on some condition we can speed up evoultion?
5.And most interesting to me is that there is one animal that lived in octopus kidney and we know that animal came from much complexed animal. Devolution?
6.How genes know how to build organism?
7. Do any of you biologists here know concept of Gaia theory? If so what is your opinion on it.
Hi L I'm going to take a shot.
1) this is simple. Any organization of energy that has the ability to replicate. The only things that can exist into the future are things that by some principal can replicate themselves or hold form. DNA can hold information, replicate itself, and change its going to propel itself forward. it happens to be carbon based and I am told that carbon is good a reacting with things, I have also herd that sulfur is a good candidate for organization of life somewhere else, but there could be a lot of candidates.
2) organism that have more genetic diversity, will have more genes, it probably means they have been around longer.
3) there is no "junk" DNA. This term isn't really accepted anymore. All genes did or do have a purpose or remaine possibly because the were a mutation be did not cause a positive or negative result.
4) absolutely. Hardship speeds up evolution. If you bombard a culture of bacteria with various hardships and regrow the survivors, you are "speeding up" evolution in relation to the bacteria that was left alone. All calamitous events on earth "sped" up evolution.
5)No, there would be no such thing as devolution. If the animal appeared to loose complexity it was only evolving relative to natural selection. The circumstances favored traits that only apear to us to be less complex, in reality complexity is just a label. We call friction fire primitive, yet it's much more "complex" than a match.
6) my simply understanding of this is that it's like a giant puzzle. Certain pieces can only fit with others, this inevitably results in a very specific structure. Molecules being the puzzle pieces. Copacetic would be a good resource for this question.
7) I am very familiar with it, but I'm no biologist. I think it's a liekely possibility. Life and conciousness are said to be emergent properties of self organization. If our brain cells were concious, they would call us Gia. city's, country's, and even all of life itself working as an ecosystem and environment fit the requirements for the definition to be considered alive. It's really only a matter of perspective..... But then again so does fire. If you were a life form the size of the star beatlegeuse, you would probably consider life on earth it's own self contained organism, but probably only after you whitenessd it reproduce itself by colonizing another piece of dust.
"To know oneself is to study one self in action with another person. Relationship is a process of self evaluation and self revelation. Relationship is the mirror in which you discover yourself - to be is to be related."---Bruce Lee