What does a DNA model look like?

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What does a DNA model look like?
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DNA-Deoxyribose Nucleic Acid

• Scientist who discovered the model of DNA
• James Watson
• Francis Crick
• Rosalyn Franklin
• Determines an organisms traits
• Controls the production of Proteins

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• Made of Nucleotides
• Phosphate group
• Sugar (Deoxyribose)
• Nitrogen Base
• Adenine (A)-2 rings
• Thymine (T)-1 ring
• Guanine (G)-2 rings
• Cytosine (C)-1 ring

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• DNA is a Double Helix
• Two strands connected by hydrogen bonds (double)
• Two strands twist around each other (helix)
• Adenine is complementary (opposite) to Thymine
• Guanine is complementary to Cytosine
• One strand- ATTGGC
• Complementary- TAACCG

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• DNA Replication
• Each new DNA molecule has a new strand and an old
  strand
• DNA molecule unzips
• Free-floating nucleotides attach to old strand
• Use enzymes such as DNA polymerase and DNA ligase