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Showing posts with label dna. Show all posts
Showing posts with label dna. Show all posts

Friday, January 25, 2013

Crazy new data storage: DNA and quartz crystals (for 300 million years)

Because I don't want to go to bed with two consecutive posts pertaining to Star Wars staring me in the face (no matter how good, or how nutty)...

A strand of DNA containing the digital data of all of Shakespeare's sonnets, a half-minute sound clip of Martin Luther King's "I Have a Dream" speech, a photo and a science paper was announced a few days ago in an article from the journal Nature. So you could pretty much take everything information-wise accumulated during the course of your entire life - photos, videos, music, writings, financial information, medical files, an entire Blu-ray collection of movies and TV shows, computer games and porno - and put it inside a test tube. The DNA used in the research took two weeks to extract data from, but the read times are supposed to get shorter as the tech develops.

And earlier this month a group of researchers in Japan announced they've turned quartz crystal into a storage medium that will last 300 million years. Currently it has the capacity of a standard CD, but it's thought that it can be expanded with more layers of crystal. It probably won't have the size-to-data ration of the DNA gimmick but in time it'll still hold a lot of your videos, finances, movies, porno TV shows and other stuff.

If the technology ever produces practical quantum computing and nano-scale laser diodes, there could be some wildly cool applications with this. Never mind that iPhone silliness: gimme a real Mother Box!

(Can't recall if I've ever used a Fourth World/New Gods reference on this blog before, but I have now :-)

Friday, December 14, 2012

First photo of DNA in all its twisted glory!

Nearly sixty years ago, James Watson and Francis Crick figured out what DNA - that mega-long molecule containing the blueprints of organic life - looked like. All they had at the time was deduction through observation and x-ray crystallography (don't worry, it took me awhile to learn how that worked, too!) to figure out the double-helix arrangement. But they had no way of actually seeing the darned thing.

Now for the first time, scientists have been able to visually image DNA using a novel technique with electron microscopy and a teeny tiny "bed of nails". Hit the above link for more about how Enzo di Fabrizio and his fellow boffins at Italian Institute of Technology pulled it off.

As for the first real picture of DNA, behold:

Photo credit: Enzo di Fabrizio/Italian Institute of Technology
WOW! It's the double-helix determined by Watson and Crick... but look at how tightly packed that thing is!! Doesn't look as spacious as those colorful twisty ladders we all saw in our high school biology labs, does it?

Amazing, that that much information about the design of you, me, every person on the planet and all other known forms of life on Earth, takes up so tiny an amount of space within the nucleus of a cell. I heard years ago that if you took all the DNA of your body and strung the individual molecules end-on-end, that it would reach from the Earth to the Sun.

Looking at that picture, I'm finally believing it.

Wednesday, September 30, 2009

Skull thought to be Hitler's is actually of a woman

In April of 1945, during the final days of the European theater and with the approaching rumble of Soviet tanks heralding the collapse of his "Thousand Year Reich", Adolf Hitler is said to have committed suicide within his Berlin bunker. His longtime mistress Eva Braun also joined him in death, rather than be captured alive. They took cyanide and then shot themselves. And according to surviving accounts, Hitler's aides took the bodies outside the bunker, doused them with gasoline and set them ablaze: an attempt to ensure that the Soviets could not make a trophy of the Fuhrer's remains.

But a year later, bones and skull fragments with bullet holes were found at the site by Russian forces. They were assumed to be all that was left of Adolf Hitler. The fragments sat in Moscow throughout the Cold War, and only in recent years have they finally come under the scrutiny of modern science.

And now, according to DNA studies... "Hitler's skull" is found to be that of a woman, most likely between the age of 20 and 40.

There's no telling who this skull might be then. My guess is that it might be Braun's, but absent any confirming DNA from possible relatives, there's no way we'll ever know. Just one more mystery then, among the myriad of enigmas, of World War II. But it also adds fuel to the fire about persistent theories that Hitler survived long after the war.

Or, maybe it really is Hitler's skull... and he was actually a woman? I've heard that one in my time too.

Thursday, July 23, 2009

DNA not the same throughout body, study finds

For all these years it's been assumed that every cell of an organism shared the same DNA. The differentiation between cells only arising from the synthesis and properties of the associated proteins that were expressed by the DNA... but otherwise, a cell is the same as every other cell in the body.

Funny how quickly old assumptions can easily get tossed aside, ain't it?

Now comes word that DNA is NOT the same throughout all cells of an organism... or throughout a human organism anyway. That's the finding of a study in Montreal regarding the genetic causes of abdominal aortic aneurysms.

It's both a fascinating read and a rather scary one, when you begin to consider all the medicine that has been based on the notion that our genes are uniform throughout our cells. And then, you have to wonder what the implications are regarding something like DNA evidence in a court case. Technically, I don't think it will matter much... but just wait and see how long it takes before a legal challenge comes up in a paternity suit or murder trial on grounds that all genetic testing is now suspect.

Friday, March 13, 2009

Man wants DNA testing to prove he's Al Capone's grandson

A guy in Boston named Christopher Knight (so far as I can tell there's no relation :-) believes that he is the grandson of infamous mob boss Al Capone and he has so much confidence about it that that he has legally changed his name to "Christopher Capone".

And now Chris Capone is seeking DNA samples from known male descendants of the gang so that a scientific determination can be made. If none are willing to provide him with genetic material, Chris Capone wants to exhume the remains of "Scarface Al" and get the DNA from that.

Maybe the exhumation can be turned into a live televised special. It could be like a chance for redemption for Geraldo Rivera :-P

Thanks to Tony Hummel for passing along the story!

Friday, February 06, 2009

State of Washington considers swabbing DNA from EVERYONE who gets arrested

It's like Barney Fife gone zealous with a genetics lab: legislators in the state of Washington are mulling the idea of getting DNA samples from everyone who is stopped by law enforcement for anything at all, even something so minor as a traffic infraction. And no, they don't wanna wait until a conviction in court either: everybody arrested would have to yield over their personal deoxyribonucleic acid. Although supposedly the DNA would be destroyed if there is no conviction (yeah right).

Y'all in Washington, you need to fight this as hard as you can. This is a huge intrusion of personal rights and screw what the "bigger government" types are saying about how this is "needed" to be "safe". It's not a question of "will this be abused?" because history has proven that if a thing such as this is tolerated, it will be abused!