Length of uncoiled DNA?

[Weirdmaskman]

What is the length of an uncoiled human DNA?

Edited September 14, 2011 by Abiola mubarak mohammed

[CharonY]

From which chromsome? A nucleotide within a helix occupies roughly 3.4 Å or 0.34 nm (am not 100% sure but should be easy to check). If we made a single molecule out of all chromosomes, the haploid genome (about 3 gigabases) would have roughly the length of 1m. This is assuming that it still maintains a helical structure.

[Weirdmaskman]

From which chromsome? A nucleotide within a helix occupies roughly 3.4 Å or 0.34 nm (am not 100% sure but should be easy to check). If we made a single molecule out of all chromosomes, the haploid genome (about 3 gigabases) would have roughly the length of 1m. This is assuming that it still maintains a helical structure.

 

"Thanks charonY"

 

From which chromsome?

 

"Getting confused, you mean the DNA in the body varies with specialized cell?"

A nucleotide within a helix occupies roughly 3.4 Å or 0.34 nm (am not 100% sure but should be easy to check). If we made a single molecule out of all chromosomes,

the haploid genome (about 3 gigabases) would have roughly the length of 1m. This is assuming that it still maintains a helical structure.

"helical structure" what i'm trying to get is the length of the DNA uncoiled, unwined and stretch to the maximum length. Is this known? <not assuming it to be in helical structure>.

[CharonY]

The haploid human genome has around 3 gigabases, but it is not a single molecule. Rather, it is distributed to 23 chromosomes.