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.
Boiler Type. Boiler service costs can vary between boiler types. Typically, oil boilers cost slightly more than gas boilers to service, but it is always a good idea to compare quotes in your area, as prices can differ from town to town.s there are so many factors that can affect the cost of boiler servicing in your area, the best way to get an accurate idea of how much you can expect to pay is to compare quotes from qualified engineers in your postcode.