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DNA

DNA. "The Blueprint of Life". DNA stands for... D eoxyribo N ucleic A cid. DNA FACTS. established by James Watso n and Francis Crick  Shape of a double helix. codes for your genes   (traits) made of repeating subunits called nucleotides. What is a nucleotide?. Has three parts:   

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DNA

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  1. DNA "The Blueprint of Life"

  2. DNA stands for...DeoxyriboNucleic Acid

  3. DNA FACTS • established by James Watson and Francis Crick  • Shape of a double helix

  4. codes for your genes  (traits) • made of repeating subunits called nucleotides

  5. What is a nucleotide? Has three parts:    PHOSPHATE DEOXYRIBOSE (sugar) BASE  (A,T,G,C)

  6. Base-Pair Rule Adenine <==> Thymine Guanine <==> Cytosine The sides of the DNA ladder are phosphate & sugar held together by  hydrogen bonds

  7. Base Pair Rule One side:     A   T   A      T   C   A      T   G   C      G   G   G Other side:

  8. How the Code Works The combination of A,T,G,C determines what traits you might have, for ex. C A T C A T   =  purple hair T A C T A C  =  yellow hair

  9. Think of the bases of DNA like letters.Letters form words....Words form sentences....              *endless               combinations

  10. Let's Review What We Know About DNA 1.  DNA stands for:   De _____ ribo ______  acid 2.  What is the shape of DNA? _______________ 3.  Who established the structure of DNA?  ____________ 4.  Adenine always pairs with _______________ 5.  The sides of the DNA ladder are deoxyribose and _____ 6.  Guanine always pairs with _____________ 7.  What is the complimentary sequence:   A A T  G  C A 8.  The two sides of DNA are held together by _______ bonds. 9.  DNA is composed of repeating subunits called ______________________ 10.  What are the 4 bases that make up the rungs of the DNA ladder? _______________________________________

  11. DNA REPLICATION the process by which DNA makes a copy of itself (cell division) SEMI-CONSERVATIVE - half of the old strand is saved

  12. RNA - the messenger*single strand*ribose sugar*contains no thymine, uracil instead*follows base pair ruleDNA:   A  T  A   G  C  GRNA:  

  13. RNA carries the "message" to the ribosomes, where proteins are made

  14. DNA -->  RNA -->  Protein Proteins are the building blocks of the organism (traits)

  15. Transcription -  process where RNA is made from DNATranslation - process where proteins are made from RNA

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