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| Resident Slayer | Re: Dna Well, according to this article (that has a bunch of other interesting points in it too about DNA replication), its only about a millionth of an inch, all wound up inside your cells, but if you could unwind it and stretch it out it would be over 3 feet (1m) long! Small, but really big, Buffy ---------------- "If you do not agree with anything I say, I'll not only retract it, but deny under oath that I ever said it!" __________________________________________________ ______________-- Tom Lehrer "The shrinks diagnosed me a sociopath with paranoid delusions. But they’re just out to get me cause I threatened to kill them." Forum Administrator Hypography Science Forums - Science for Boys and Girls! Its not for nothing that we hang out here. | |
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| Questioning | Re: Dna It is highly condense in your cells. I really dont know of my head what is the width of the double stranded dna, but it gets condense in to 30 nm fiber, then 30 nm selenoid gets condense into 700 nm fiber and then i think 1400 nm or chromatin. it is very thin like many of us here already mentions, according to PBS if you unrevel all of your body dna it would stretch from here to the moon and back about 3000 times (yet my molecular bio professor said only 30 times). ---------------- Community College Bio major student | |
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| Resident Slayer | Re: Dna Yep. Michaelangelica and I were chatting about it just the other day. I've had arguments about its structure and usage with Biochemist in the past too. I think you'll run into quite a bit here if you search on "junk dna".... Cheers, ![]() Buffy ---------------- "If you do not agree with anything I say, I'll not only retract it, but deny under oath that I ever said it!" __________________________________________________ ______________-- Tom Lehrer "The shrinks diagnosed me a sociopath with paranoid delusions. But they’re just out to get me cause I threatened to kill them." Forum Administrator Hypography Science Forums - Science for Boys and Girls! Its not for nothing that we hang out here. | |
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| bike | Re: Dna interesting... there are a lot of people I've been encountering lately that believe they can use visualization techniques, sunshine, and the Mayan Tzolkin to activate their DNA. They believed that on "Galactic Activation Portal" days (there are 52 in a Tzolkin year. Black squares on the Tzolkin) certain people could rapidly evolve themselves through meditation. ---------------- "Rome falls nine times an hour" ![]() ![]() | |
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| Resident Slayer | Re: Dna Quote:
You'd need a massive Improbability Drive to magnify the effect and make it happen.... Sunlight might do it, but only randomly. That's how you get skin cancer of course! Quote:
Caveat emptor, Buffy ---------------- "If you do not agree with anything I say, I'll not only retract it, but deny under oath that I ever said it!" __________________________________________________ ______________-- Tom Lehrer "The shrinks diagnosed me a sociopath with paranoid delusions. But they’re just out to get me cause I threatened to kill them." Forum Administrator Hypography Science Forums - Science for Boys and Girls! Its not for nothing that we hang out here. | |||
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| Resident Slayer | Re: Dna You mean the sunlight? Sunburn causes severe stress, in combination with UV rays that have high energy levels that can directly affect bits of DNA. We don't know the entire mechanism, but susceptibility to cancer has to do with the ease with which thet DNA switches for the mechanisms that control reproduction of cells can be flipped causing them to reproduce without bound. But what changes or mutations occur in a DNA strand due to this sort of external attack can be anywhere on the DNA strand. A UV ray doesn't know how to target some specific location or not, it just hits it and if it hits it right with enough energy or repeatedly enough, it can cause damage. Certain areas are more *susceptible* to sustaining this damage, thus causing problems like causing the cell to become cancerous, but there are lots of different possibilities. Randomly distributed, Buffy ---------------- "If you do not agree with anything I say, I'll not only retract it, but deny under oath that I ever said it!" __________________________________________________ ______________-- Tom Lehrer "The shrinks diagnosed me a sociopath with paranoid delusions. But they’re just out to get me cause I threatened to kill them." Forum Administrator Hypography Science Forums - Science for Boys and Girls! Its not for nothing that we hang out here. | |
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