Biology 1002B Lecture Notes - Lecture 11: Gene Expression, Chromosome
28 Nov 2015
School
Department
Course
Professor
Document Summary
Biology lecture 11 origin of eukaryotes 2. 95% of proteins are encoded for by the nucleus. Takes about 3 thousand proteins to keep mitochondria/chloroplast to work. Movement of genes from mitochondria and chloroplast to the nucleus. Coordination of cell function moving to nucleus centralizes control. Partially reduced oxygen haven"t reached h2o yet. Strong oxidizing molecules rip electrons away. Makes no sense to keep genetic information (very important) where you have. Ros being made get them away when they are in nucleus. Genetic regulate gene expression, recombination which produces variation (better reason) E. coli has about 5000 genes in about 5000kb of circular dna: original organism that was chloroplast probably had around same amount. Vaucheria (algae) has only 169 genes in only 115 kb of circular cpdna: chloroplast genome o o. Organelle genomes have greatly reduced over evolutionary time. Proximity to the electron transport need to replace proteins very quickly so need to be close, not in nucleus.
