NATS 1760 Chapter Notes -Chemical Structure, Cell Nucleus

• School: York University
• Department: Natural Science
• Course: NATS 1760
• Professor: Darrin Durant

Document Summary

Excerpts from genomes & what to make of them (pg. 341-344: genomes are understood as dna molecules that are carriers of information, embodied in the sequences of nucleotides --> now as a sequence of four letters a, G, c, and t: this informatic model of dna focuses attention on the coding dna" involved in the production of proteins; treating dna as a text ( 3 letter words employing 4 letter alphabet) Models and metaphor; researchers must employ them to make sense of the system they study. It identifies dna as the uncaused cause of what goes on around in the cell nucleus; original message, recipe to be followed, instruction to be obeyed, program it will determine, or the controlling or master molecule. Environment is taken for granted in the course that gives dna the lead role: at the molecular level, a cell is an elaborate chemical system with a self- stabilizing and boundary-maintaining mode of operation.