BIOL 3110 Lecture Notes - Sv40, Base Pair, Dna Supercoil
Document Summary
The size of a dna molecule is measured in the number of base pairs (bp), one nucleotide residue has an average molecular weight of about 330, and therefore, one base pair will weigh in at 660. Since the average length of a nucleotide residue is about 0. 34nm then the length of a kbp is approximately 340nm (refer to tab. The haploid length of an average mammalian chromosome is approximately 3 billion bps and with an average length of 0. 34nm per bp therefore the total length is around 1m in length. The idea that b-dna is the perfect model for a normal helix is not exactly true. The bending of the molecule itself occurs most frequently in long stretches of. The proposed function or purpose of bent dna is to allow for the exposure of certain segments of the chromosome without opening the whole gene. Linear dna exists in nuclear chromosomes; found commonly is bacteria and.
