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The DNA of a frozen specimen was used to grow embryos

Australian scientists have successfully taken the first steps necessary for bringing back an extinct frog species.

The team, led by University of New South Wales paleontologist Mike Archer, has grown embryos with the revived DNA of the extinct gastric-brooding frog for the first time.

The gastric-brooding frogs were a genus of ground-dwelling frogs that were native to Queensland in eastern Australia. It was quite an extraordinary genus because it had the only two known frog species that incubated their offspring in the stomach.

However, the gastric-brooding frog became extinct in 1983.


Now, the research team has brought their DNA back to life. It did this by reviving frozen DNA samples of a gastric-brooding frog and inserting the genetic material into donor eggs. The donor eggs were those of a distant relative -- the great barred frog. But the great barred frog's DNA was deactivated by UV light.

As time went on, the cells began dividing, showing signs of growing embryos.

The embryos have not yet turned into tadpoles, but research shows that the dividing cells do, in fact, have the DNA of the extinct frog.

"We do expect to get this guy hopping again," Archer said.

While finding viable DNA and creating the frog embryos was no easy task, this opens the door to the possibility of bringing other extinct species back to life.

Source: smh.com.au



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Hopefully they will be careful here
By BifurcatedBoat on 3/19/2013 5:05:03 PM , Rating: 1
If the cataclysm that wiped out the dinosaurs hadn't happened, we wouldn't exist. We should be careful not to forget that fact. Nature does not care what species form its balance.




RE: Hopefully they will be careful here
By MrBlastman on 3/19/2013 5:10:50 PM , Rating: 1
Until humankind figures out a way to get off this rock and expand into the cosmos, anything we do here or achieve is meaningless. We're no better than giant lizards with pea sized brains.


By MrBlastman on 3/20/2013 5:23:36 PM , Rating: 2
I'm perplexed how someone could rationalize that what we do here IS useful if we never manage to leave the Earth (and rated me down). Science has shown we are doomed if we remain on this planet. Either mankind will wipe itself out or a natural, celestial event will lend a hand. One or the other will happen. It is a matter of time.

If we never leave the rock, we'll perish and everything we do will be worthless.


RE: Hopefully they will be careful here
By toffty on 3/19/2013 5:44:41 PM , Rating: 2
Remember, in the time of the dinosaurs CO2 levels were much higher - global temp was hotter and more humid - and oxygen levels were much lower. That's what allowed dinosaurs to flourish and why mammals were relegated to rat size. Even if man did bring dinosaurs back to life, they would not thrive… at least not until we kill ourselves off from our constant CO2 emissions and a few million years from now dinosaurs reappear as reptiles grow into dinosaurs through evolution.

Also there is no dinosaur DNA pure enough (if any at all) to actually sequence and build a full map from. So no chance in Jurassic Park happening IRL.

I would like to see Dodo Park though ;)


By Reclaimer77 on 3/19/2013 6:34:08 PM , Rating: 2
quote:
Even if man did bring dinosaurs back to life, they would not thrive…


Obviously, we have better weapons :)

But in all seriousness, you cannot possibly predict how they would react to our environment biologically. There's just so little we actually know about them beyond fossil records.

quote:
at least not until we kill ourselves off from our constant CO2 emissions


*groans*

Please refrain from the wacko-environmentalist predictions. Of all the things that could kill off mankind, higher CO2 ain't it.

quote:
Also there is no dinosaur DNA pure enough (if any at all) to actually sequence and build a full map from. So no chance in Jurassic Park happening IRL.


Movie trivia fail!! :) They filled in the missing sequences with amphibian (frog) DNA.


By Techslave on 3/20/2013 8:21:06 AM , Rating: 2
Exactly. That's why any species we bring back should eat the lawyers first.


"If they're going to pirate somebody, we want it to be us rather than somebody else." -- Microsoft Business Group President Jeff Raikes

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