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DNA! spooled gene chromosomes chromatin double helix.

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Presentation on theme: "DNA! spooled gene chromosomes chromatin double helix."— Presentation transcript:

1 DNA! spooled gene chromosomes chromatin double helix

2 1953 Wilkins Franklin Watson Crick

3 Nucleotides are the monomer of nucleic acids
This component varies

4 nucleotides creates a nucleic acid, a polymer
The chain of nucleotides creates a nucleic acid, a polymer

5 sugar phosphate base pairs covalent bond H-bond N-base

6 DNA has 4 nucleotides purines pyrimidines

7 The base pair rule makes the
two helices complementary Adenine bonds to Thymine Cytosine bonds to Guanine

8 DNA is replicated when cells reproduce (mitosis, meiosis)
• each old strand acts as a template for a new one • the two stands each contain half of the original Thus replication is semi-conservative

9 RNA is a nucleic acid with a slightly different structure
Single helix Ribose sugar vs deoxyribose of DNA * uracil pairs with adenine during RNA synthesis

10 Function of each differs, but are complementary
RNA rewrites and interprets the code multiple types of RNA DNA segments of the sequence - genes - code for proteins


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