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2 DNA Functions Stores genetic information to build and maintain a living organism Copies itself
3 James Watson & Francis Creek 1953 Determined the three- dimensional structure of DNA One of the greatest discoveries in the history of science Nobel prize in 1962
4 DNA Made of repeating units called nucleotides Each nucleotide made of a sugar named deoxyribose, a phosphate and a base
5 DNA Nucleotide Deoxyribose Phosphate Base =
6 Nucleotides Form a Double Strand Deoxyribose Phosphate Base
7 DNA Molecule is Double Stranded
8 Base Pairing Rule Adenine pairs with Thymine Guanine pairs with Cytosine
9 DNA Total length of DNA in each cell is about 6 feet Wraps around proteins called histones Over 3 billion nucleotide pairs in human DNA!
10 DNA Replication DNA strands separate DNA nucleotides attach to each strand
11 Each new DNA molecule will be an exact copy of the original
12 First, DNA strands separate
13 Second, an RNA attaches to DNA strand DNA cannot start replication on its own
14 Third, DNA nucleotides are attached to DNA strand
15 Fourth and final, the RNA is removed
16 DNA Errors Replication is not 100% accurate –Errors occur when copying DNA DNA damaged –Ultraviolet light –X-rays –Cigarette smoke –Nitrates (smoked meat) –Pesticides & Herbicides
17 The End
DNA (Deoxyribonucleic Acid). What is DNA? DNA is an encoded molecule that determines traits by giving instructions to make proteins.
Structure of DNA Notes 12/17. The Double Helix Made up of units called nucleotides, which have three parts.
DNA. DNA is the organic molecule Deoxyribonucleic Acid The function of DNA is as a molecule that permanently stores the information or instructions necessary.
DNA Introduction. What is DNA? Genetic information of life Type of Nucleic Acid Double Stranded.
DNA: The Molecule of Heredity
Chapter 10. Deoxyribonucleic acid Primary function: To store and transmit the genetic information that tells cells which proteins to make and when.
Defined: Molecule that stores genetic information Nucleotides: Three repeating units of nucleic acids –1) Sugar –2) Phosphate Group –3) Nitrogen Base.
DNA “Deoxyribonucleic acid”
DNA Structure, Function & Replication. DNA stands for… DeoxyriboNucleic Acid.
DNA Replication Why does the DNA in a cell replicate before cell division?
Deoxyribonucleic Acid Primarily in nucleus Contains the code for making proteins Can’t get out of the nucleus Very large molecule Made of nucleotides.
I can identify the location of DNA in a cell. I can describe the structure of DNA. I can identify the basic building block of DNA. I can list the 3 parts.
DNA –Was known as a chemical in cells by the end of the nineteenth century –Has the capacity to store genetic information –Can be copied and passed from.
DNA Deoxyribonucleic Acid Structure and Replication
DNA History, Structure, and Replication. DNA History Important People: 1928 Frederick Griffith 1928 Frederick Griffith 1944 Oswald Avery 1944 Oswald Avery.
Warm-Up Where is DNA found? What is DNA?
Nucleic Acids & Protein Synthesis Chapter Structure of DNA Phosphate group Nitrogen-containing base Sugar (deoxyribose)
reproducesgenetic continuity When a species reproduces, there is genetic continuity that is maintained from one generation to the next. WHAT WHAT.
Unlocking the mystery of DNA. Cell division and DNA replication Cells divide Growth, Repair, Replacement Before cells divide, they have to double cell.
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