Origin of Life

Dr. Susan Fisher of OSU describes the Origin of Life for her Biology 101 course.

Category:

Education

Tags:

• osu
• fisher
• origin
• of
• life
• biology

[danmcc22]

Ya right! We're here so that must be true even if it makes absolutely no sense at all.

[niko25ish]

Two qick questions:

1) is there any evidence that matter, on any level (chemically) can or will organize itself, all by itself, even when energized?

2) has a single cell ever been shown to increase its complexity (add information) necessary in its DNA (genetic code), to take itself to a higher level?

[johnball235]

this is annoying bullshit

[Frab2001]

Lol....nice video. Oh brother....

[sulljoh1]

@TheSelfishAltruist Of course the null hypothesis is the rational starting point. As for the origin of life, do you think that we will ever get to the point where we are almost certain what happened? There is so much uncertainty at the moment, I do not want to give up on a really good theory. Something that is just obviously the right answer, like evolution is now. Say that we observe a certain type of comet influencing a hitherto unseen chemical reaction that self-replicates, just speculation.

[TheSelfishAltruist]

@sulljoh1 We also know all animals on Earth replicate its DNA via almost identical machinery, and that they evolved over millions of years from simpler life forms, and that we all share a common ancestor.

The problem with the idea of the Jovian moon, is there is nothing to suggest that happened. We should always assume nothing, and try prove it, and not assume something and try to disprove it. If we did this we could believe in an infinate number of hypothesis, like life was made from martians

[TheSelfishAltruist]

@sulljoh1 Yes very true... although I think it is getting close to being able to safely say life started via a self replicating nucleotide (details will never be known). We know nucleotides can be made from simple molecules, they arrange into chains in solution, and that the right sequence of RNA can catalyse self replication, and if within a lipid membrane could be our first cell. Also DNA and protein had to evolve seperately.

Scientists created life by inserting DNA into a cell. All evidence

[sulljoh1]

@TheSelfishAltruist Very true. It is a beautiful theory, but the history of science teaches us that we should be cautious. Until Chemists have reproduced something more plausible or data is available from another origin of life or early life (perhaps on a Jovian moon) we should make it very clear that this is a theory in the speculative sense. Very different from the sense of evolution or the big bang as a theories which are well established.

[TheSelfishAltruist]

@sulljoh1 This is a poetic version of the RNA world theory, which is the best explanation we have.

[sulljoh1]

This is not very illuminating. This is only one possible theory. I wanted some speculation on what could have caused the origin of life.