How old is DNA?

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oscar91
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How old is DNA?

Post by oscar91 » Wed Mar 15, 2006 9:28 pm

How old is dna and how old are you all?

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Post by Master DRe » Wed Mar 15, 2006 9:40 pm

DNA is old as well as the first microorganism appear on earth??

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victor
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Post by victor » Sat Mar 18, 2006 12:23 pm

But, based from my book, I'm sure that DNA is younger than RNA..:lol:
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Post by Remote » Sat Mar 18, 2006 5:28 pm

about 4 billion years
Last edited by Remote on Sat Mar 18, 2006 7:00 pm, edited 1 time in total.

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alextemplet
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Post by alextemplet » Sat Mar 18, 2006 6:15 pm

Don't you mean 4 billion?
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Sepals
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Re: How old is DNA?

Post by Sepals » Sun Mar 19, 2006 6:37 pm

oscar91 wrote:How old is dna and how old are you all?
It depands on the cell the DNA is in. For eg, if it's in a cell with a short life span, it doesn't get old. For something like bone cells, those last a long time, like a life time. Saying that when cells in eukaryotes divide the DNA replication is semi-conservative which means maybe there is DNA within animals which lasts from birth to death (I no longer study cell bio so I'm a bit vague on this topic). As for how long DNA has existed on Earth: just under 4 billion years.
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Post by Sepals » Sun Mar 19, 2006 6:38 pm

victor wrote:But, based from my book, I'm sure that DNA is younger than RNA..:lol:
Yes DNA evolved from RNA which was the original genetic material. This came from repilcating clays. There is a thread on this if ppl want more info.
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