All Answers (8) 1  This is nice information from wikipedia visit. 2  I guess if you assume the DNA is at rest with an average rise of 3.4 A per base pair, then the length of chr1 would be 3.4A * 249*10^6, i.e. 847*10^6A, i.e. ~85 mm, or 8.5 cm.
Boiler sizing includes two things: 1  The heating and hot water capabilities of the boiler. 2  The physical size of your boiler and whether it will fit in the space you have it destined for.
A double boiler is a set of two fitted saucepans or pots that are stacked together with space between them. The bottom saucepan is filled with water, then the second saucepan is stacked on top. The steam from the bottom pot rises and heats the upper pot.