BIOL 118 Study Guide - Midterm Guide: Molecular Cloning, Ancient Dna, Cell Therapy
Document Summary
Dna= blue print of cell, double stranded surrounded by nuclear envelope- chemical continuity of nucleus. Gene expression: process of converting the information in dna. Functioning molecules within the cell, inhibition of gene expressed: turned off. Behavior determined by environmental effects of gene expression, phenotype. Francis crick proposed that the sequence of bases in dna acted as code: dna is an information storage molecule, different combinations of bases specify to 20 aa. A particular stretch of dna specifies the aa sequence of 1 protein. The information in the sequence of dna is not directly translated into aa sequence of proteins. Messenger rna was found to carry information form dna to the role of protein synthesis. Uses dna as a template, copies the code by matching complementary nucleotides. Dna double stranded, protected by nuclear envelope of ph, of system, in nucleus genes get rise from 1. 5-2 percent, mrna then exported, intermediate molecule.