DNA Replication

This is a clip from a PBS production called "DNA: The Secret of Life."

It details the latest research (as of 2005) concerning the process of DNA replication.

Google search the PBS title and you can find the website which has links to many informative sites and interesting clips. This is just a segment detailing replication.

A Windfall Films Production for Thirteen/WNET New York in association with Channel Four.
© 2003 Educational Broadcasting Corporation.

• Category

  Science & Technology

[MrBcpresident]

Deep Blue- Helicase

Light Blue- DNAp3 integral structure

Deep Purple- DNAp3 functional dimer subunits

Sea Foam Green- beta Clamps

Mossy Green- Primase

Light Purple- DNAp3 Clamp-loading complex

Also notice the yellow RNA primer

[akoerten13]

If I were an enzyme I would be DNA Helicase, so I could unzip your genes.

[GirlOnHerGuitar]

It isn't shown here for some reason, or if it is, I didn't see it. It should be before the helicase above the replication fork, but the furthest up the video showed was the helicase.

[RealityBurgers]

Well obviously it must have been some sort of divine intervention! *sarcasm!* Just because we cannot fully explain the process of how, billions of years ago, inorganic matter first arranged itself into gradually more complex systems that could eventually make crude copies of themselves doesn't mean we have to jump to the god hypothesis again. God is the null-hypothesis of the unimaginative!

[Adam Camp]

Funny that people like Dr. Dawkins think a cell could spontaneously arise from nonliving matter. They say it could be as simple as a micelle containing a self-replicating enzyme. Oh by the way, we have never discovered anything naturally occuring similar to what is pictured above. The self catalyzing ribozymes are labile, code for nothing, and usually if not always require a thermocycler to replicate. If you think abiogenesis is supported by the literature, I ask you to cite one primary article.

[jb0433628]

For example with artificial neural networks, you can train them using genetic algorithms to get a network that will reproduce a set of outputs given a set of inputs. The input data is the input and output set you want to reproduce, and the network in the end can only get some level of precision (never 100% with big data sets) that's why we can call that a lossy compression (the data required to describe the network is smaller than the data sets)

[Samuel McCabe]

That's not the impression I get from your previous comments. "Genetic algorithms use a lot of data to evaluate each trial, and the result is a compressed and lossy version of the input data." Neither of these things are necessarily true, and I can't even imagine what you mean by "compressed and lossy version of the input data" for most applications of GA.

[jb0433628]

I studied genetic algorithms during my graduate classes in artificial intelligence.

[Samuel McCabe]

I don't think you understand the meaning of "information" or "genetic algorithm".

[alfabetaom]

Believing that high up beings designed us is exactly the same as believing in god. Just because you don't understand why things are doesn't mean you have to jump to some random conclusion like that

[sammywilly61]

Where's the DNA gyrase?