BIOL 3110 Lecture Notes - Lecture 14: Alpha Helix, Deoxyribonuclease, Ploidy
Document Summary
It initiates a replication: hfr occurs, either plasmid can form pili that can attach to recipient cell, only one portion gets transferred over, if you have a drug resistant gene you can transfer the single strand. Dna gene that gets copied by recipient into a double strands. November 1st, 2016: homology recombination allows for crossover, replaces recipient with donor, always keep the same amount. Important because in nature normal cells are left handed to form negative supercoils, that ay if histones pop off, you create bubbles. November 1st, 2016: dna gyrase (only found in bacteria) can only put in negative coils we don"t have that so we make toroidal writhe by wrapping it around structures, from top to bottom as dna wrapped around nucleosome. If it goes in anticlockwise position: left handed. 30% more amino acids: dna loves histones because, dna is negatively charged so they come together very easily.
