density of single strand - (Aug/23/2006 )

hi

is it correct that density of single strand DNA is more than double strand DNA.
how?

book "fundamentals of biochemistry Donald voet"
chapter 23 "ultracentrifugation"

---

What are you talking about? String, London streets or DNA, RNA, PNA, etc?

And by density...? grams per cubic cm, electron density; or something else.

Where did you find this statement? Do you have a reference we can check out?

---

if he's talking about DNA, it kind of makes sense

I think maybe the mass would be spread over a little more area when the two strands would anneal (hydrogen bonding, increasing the amount of space the electrons occupy as they stretch towards each other)

but I would be curious to see a reference as well

---