TV News LIES

Friday, Sep 19th

Last update07:47:35 PM GMT

You are here News Science Bacterial Competition In Lab Shows Evolution Never Stops

Bacterial Competition In Lab Shows Evolution Never Stops

microbe evolutionEvolution is relentless process that seems to keep going and going, even when creatures live in a stable, unchanging world.

That's the latest surprise from a unique experiment that's been underway for more than a quarter-century.

Evolution is so important for biology, medicine and a general understanding of our world that scientists want to understand it as fully as possible. That's why, in 1988, biologist took a dozen glass flasks and added identical bacteria to each of them. Those 12 populations have been evolving ever since, letting scientists watch evolution in real time.

Day after day — including holidays and weekends — workers in Lenski's lab at Michigan State University in East Lansing feed and care for the E. coli bacteria. The bacteria eat and divide again and again. The original microbes have produced more than 50,000 generations over the last 25 years.

Random mutations have allowed them to get fitter, meaning they reproduce faster. "In evolutionary biology, fitness is this representation of the ability of an organism to survive and reproduce," says Lenski. He explains that all else being equal, organisms that reproduce more quickly will have an advantage when competing with those that reproduce more slowly.

Early on, Lenski predicted his bacteria would adapt and adapt but eventually hit a wall — that they would reach a peak level of fitness they couldn't improve on.

More...

 


Most Recent Related Stories...


Identical twin linked to 2004 rapes by new DNA test

identical twin gene dnaA Boston-area man long suspected of two 2004 rapes was formally charged after a new DNA...

Jurassic 'squirrels' push back clock on emergence of mammals

Jurrisic squirrelThe fossil remains of squirrel-like mammals with a hefty dose of cute are helping reset the...

Solar storm heading for Earth

solar flareA "strong" solar flare that launched off the sun Wednesday afternoon could cause some fluctuations in...

Scientists find larger monument buried under Stonehenge

stonehengeResearchers said on Wednesday that they have produced digital maps of what is beneath Stonehenge, Britain’s...
 
America's # 1 Enemy
Tee Shirt
& Help Support TvNewsLIES.org!
TVNL Tee Shirt
 
TVNL TOTE BAG
Conserve our Planet
& Help Support TvNewsLIES.org!
 
Get your 9/11 & Media
Deception Dollars
& Help Support TvNewsLIES.org!
 
The Loaded Deck
The First & the Best!
The Media & Bush Admin Exposed!