DNA-RNA

=__﻿DNA:__=
 * Deoxyribonucleic Acid
 * Contains the sugar deoxyribose
 * Long term storage of genetic information
 * For more information about DNA, visit this interactive website: []**

DNA Replication:
__Step 1:__ The double helix unwinds and the two strands separate. __Step 2:__ Each strand functions as a template upon which a new, missing half is built. __Step 3:__ Each new double helix consists of one old and one new strand. __Extra Information:__
 * Takes place in the nucleus
 * To start, you need DNA, free DNA nucleotides, and Helicase & DNA polymerase
 * //Helicase// un-zips DNA
 * //DNA Polymerase// builds new DNA
 * This mechanism is called //semiconservative//
 * DNA replication eukaryotes occurs simultaneously at many sites (replication bubbles) on a double helix. This allows DNA replication to occur in a shorter period of time than replication from a single origin would allow.
 * Despite its speed (50-500 pairs per second), replication is very accurate. Approximately one mistake occurs with every billion nucleotide pairs. //DNA polymerase// and //DNA ligase// proofread the new daughter strands.
 * For a step-by-step animation of DNA replication, click here: []**

__RNA:__

 * Ribonucleic Acid
 * Single-stranded nucleic acid that contains ribose
 * Three types

**Messenger RNA: []**

 * RNA molecule that carries copies of intructions for the assembly of amino acids into proteins from DNA to the rest of the cell

Ribosomal RNA: []

 * type of RNA that makes up the major part of ribosomes

Transfer RNA: []

 * type of RNA molecule that transfers amino acids to ribosomes during protein synthesis



Works Cited
 * DNA Structure picture came from []
 * mRNA image came from [|http://www.library.thinkquest.org]
 * rRNA image came from [|http://images.wellcome.ac.uk]
 * tRNA image came from [|http://www.dna-sequencing-service.com]
 * information in this acticle came from Prentice Hall's Biology book, written by Kenneth R. Miller and Joseph Levine.