Rath said:
Slimebeast said:
Killergran said:
| Slimebeast said:
Because that would need proof that says that "inventing" the cellcore is an extremely unlikely event in organisms.
(but I have never ever heard anyone claim that)
|
The sheer unlikeliness of that happening is staggering. The fact that we had prokaryots for a billion years (according to Wikipedia) before we had Eukaryots should tell you how unlikely it is. It's not like there were much fewer bacterias around then. The major theories always starts with a bacteria however, which is kinda the antithesis of your argument. Bacteria evolving into eucaryotes, evolving into multicellular organisms.
So when you say "Why hasn't bacteria evolved into multicellular beings?" my answer would be, "They did". And the answer to the question "Why can't we see that happening with bacteria today?" would be "We're not looking closely enough".
|
"The fact that we had prokaryots for a billion years (according to Wikipedia) before we had Eukaryots should tell you how unlikely it is." - doesnt prove anything for me. It's other way around. Knowing what I know about bacteria makes it impossible for me to think there was 1 billion years between pro- and eukaryotes.
So when you say "Why hasn't bacteria evolved into multicellular beings?" my answer would be, "They did".
- yes yes, do u think I missed that there exists multicellular organisms? That the two lines split?
That's just looking at the problem from another angle, or rephrasing it. Why did it only happen once (knowing that the bacteria kept being widespread and successful for 100s of millions of years)?
|
Considering that more complex lifeforms already exist and are widespread is there any pressure for bacteria to evolve into a ecological niche which is already filled?
|
Yes, of course. And Im sure u agree (to a degree).
Bacteria probably compete with other organisms, and sometimes they win, and whipe out the competition. Im sure u beleive that happens all the time through evolution history.
"Pressure" is a relative term. There's always some degree of pressure in any environment (or population, depends on what perspective youre looking from) to compete and to evolve. I mean, that's the fundamental principle for evolution theory!!!!!!
(also u could imagine a case where bacteria invents their own, but complex, unique niches - because surely u aint saying that new radically different species will never evolve on earth anymore?)
