Author Topic: Evolution in two months  (Read 5505 times)

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Offline gyeonghwa

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Evolution in two months
« on: January 18, 2012, 04:47:51 pm »
Science has done it again. They've gone and evolved a yeast in only two months:

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The new study attempts to follow more the behavior of simple multicellular groups more closely. It uses baker's yeast (Saccharomyces cerevisiae), an organism that normally grows as single cells. The authors grew these in culture and, once a day, transferred them in a way that favored multicellular growth.

Their method was pretty simple. Normally, yeast are grown in a culture that's shaken, and the single cells will only slowly settle to the bottom when that's stopped. The authors only transferred the cells at the bottom of the culture to fresh food, so that they selected for those cells that settled to the bottom quickly. This favors large clusters of cells, instead of single ones.

With only 60 daily transfers, all of their experimental populations were dominated by yeast cells that grew as clusters, which the authors describe as "roughly spherical snowflake-like." These were formed because, instead of separating after they divided, cells would remain attached, expanding the cluster with each division. Although this comes at a cost compared to individual cells—the authors calculate that individual cells in the cluster are 10 percent less fit than their single-celled relatives when they're not selecting for things on the bottom. But, with the selection in place, the clusters had a huge advantage.

It also help further our understanding of how multi-celled organism came to be. The study suggest that cells that cluster had an advantage. Multi-cell organism is one of those harder facet of evolution to study.
That may be the single gayest thing I have ever read on this board. Or the old one. ;)

Offline RavynousHunter

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Re: Evolution in two months
« Reply #1 on: January 18, 2012, 05:35:48 pm »
So, in two years, we'll have primitive yeast monsters...WOOH!
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Offline Cataclysm

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Re: Evolution in two months
« Reply #2 on: January 19, 2012, 12:32:44 am »
Cue creotards claiming that this is proof of intelligent "design"
I'd be more sympathetic if people here didn't act like they knew what they were saying when they were saying something very much wrong.

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Offline The Bright Angel

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Re: Evolution in two months
« Reply #3 on: January 19, 2012, 01:09:41 am »
Ge of course Lexicon. Why wouldn't it be, intelligent design? {sarcasm}

Article wise. Excellent ;D Some good news to hear. Guess its more than "just a theory" now isn't it.
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Offline Shane for Wax

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Re: Evolution in two months
« Reply #4 on: January 19, 2012, 04:33:27 am »
I'm more amused by the fact a Pokemon reported this.

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Offline lighthorseman

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Re: Evolution in two months
« Reply #5 on: January 19, 2012, 09:48:25 am »
yeah, but its still new yeast from yeast, not crocoducks from yeast [/fundie]
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Offline Old Viking

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Re: Evolution in two months
« Reply #6 on: January 19, 2012, 04:55:42 pm »
What about missing links?
I am an old man, and I've seen many problems, most of which never happened.

Offline Jack Mann

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Re: Evolution in two months
« Reply #7 on: January 19, 2012, 08:34:45 pm »
اللغة العربية صعبة ، ولكنها جميلة جدا

Offline Vene

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Re: Evolution in two months
« Reply #8 on: January 19, 2012, 08:56:24 pm »
And here I thought he had misplaced his sausage.