00:02
Hello there for this question.
00:04
They want to know when performing gel electrophoritis, sorry if i butcher that word.
00:15
They want to know why do molecular biologists add a ladder, in your quotes, made up of nucleic acids or proteins of known sizes.
00:29
I mean size.
00:31
Well, the reason why this is, form the electrified techniques, they use that for the separation of dna and rna samples and offense like a restriction of fragment analysis, polyamorous, change, reaction, product analysis, checking the integrity of the genomic dna and purification of nucleic acids, and also why this technique is used to separate charge molecules like dna according to size.
01:13
So that's the emphasis when they bring up with the size.
01:19
So that means with the latter, why is there, is because it helps determine the size of each dna fragment after the separation has occurred...