<LI> The  distance  between  nucleotides is 0.34 nm, or .34 x 10^-9 m =
3.4 x 10^-10 m.
<LI> You have about 6 billion base pairs per cell in 46 chromosomes (p.
264).
<LI> (6 x 10^9) x (3.4 x 10^-10 m.) = 2.04 m. of DNA per cell.
<LI> You have about 200 trillion (2 x 10^14) somatic cells.
<LI> If  all  the  DNA  in  your  cells  were  uncoiled  and  lined  up
end-to-end,  their  total  length  is  (2  x  10^14)  x 2 m. = 400
trillion m. = 400 billion km.
<LI> The  distance  from  Earth  to the Sun is about 150 million km, or
300M km round trip.
<LI> You have enough DNA to take over 1,000 round trips to the Sun.
Updated Sep 12, 2007 by Peter Chen