DNA A BRIEF OVERVIEW Presented by Thor Rogers

DNA A BRIEF OVERVIEW

Presented by Thor Rogers CIS 1020 -067 Fall 2010

Created for Delan Jensen Salt Lake Community College

What is DNA? Deoxyribonucleic Acid • The molecular “blue-print” for all living organisms • Provides the molecular sequence that creates proteins • The hereditary information for all living things •

Structure of DNA Two outer sugar-phosphate backbones • 4 inner complimentary base pairs: • Adenine(A) – Thymine(T) Guanine(G) – Cytosine(C)

Structure of DNA Base pairs bind to each other by hydrogen bonds • Double helix (helical) •

DNA Replication DNA double helix unwinds • Each separated strand of DNA is replicated • • Each replicated strand consists of the original DNA strand a new DNA strand - called semi-conservative replication

Central Dogma Replication – DNA replicates itself to create two identical copies • Transcription - DNA code is converted to RNA code (ribonucleic acid) • Translation – RNA code is used to make a protein •

DNA and Proteins You have 3. 2 billion base pairs in your genome • The different combination of base pairs in your genome create genes • Genes are what code for proteins •

Proteins and You • • • Proteins help make Cells make Tissues combine to make Organs form Organ Systems work together to make you!