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DNA! spooled chromosomes chromatin double helix gene.

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

1 DNA! spooled chromosomes chromatin double helix gene

2 Watson Crick Wilkins Franklin 1953

3 Nucleotides are the monomer of nucleic acids This component varies

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

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

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 ations/dna_replication/

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

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


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