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Start-Up: If the sequence of nitrogen bases on one strand of DNA is ACTAGGC… what is the sequence of nitrogen bases on the...
The Flow of Genetic Information in Detail Recall that information in DNA is in the form of specific sequences of nucleotid...
<ul><li>Transcription </li></ul><ul><ul><li>mRNA is made by coping the DNA </li></ul></ul><ul><li>Translation </li></ul><u...
What is RNA? -RNA is single stranded -has the nitrogen base uracil in place of thymine -and the sugar ribose instead of de...
Recall that a protein is a long chain of  amino acids
<ul><li>How many nitrogen bases correspond to an amino acid? </li></ul>Genetic information is encoded as a sequence of thr...
Translation tRNA carries the amino acid to the ribosome and inserts it at the proper time
 
How mutations alter gene expression Original THE FAT CAT SAW THE DOG Deletion THE FAT CAT SAW THE DOG    THF ATC ATS AWT ...
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DNA Transcription And Translation

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DNA Transcription And Translation

  1. 1. Start-Up: If the sequence of nitrogen bases on one strand of DNA is ACTAGGC… what is the sequence of nitrogen bases on the complementary strand?
  2. 2. The Flow of Genetic Information in Detail Recall that information in DNA is in the form of specific sequences of nucleotides along the DNA strands G A T C A T C G A This information codes for the creation of proteins when needed When DNA codes for protein synthesis it is called gene expression and it involves two steps: 1. Transcription 2. Translation
  3. 3. <ul><li>Transcription </li></ul><ul><ul><li>mRNA is made by coping the DNA </li></ul></ul><ul><li>Translation </li></ul><ul><ul><li>mRNA is read by the ribosomes who then make protein </li></ul></ul>DNA  mRNA  Protein The Central Dogma transcription translation
  4. 4. What is RNA? -RNA is single stranded -has the nitrogen base uracil in place of thymine -and the sugar ribose instead of deoxyribose mRNA – messenger tRNA – transfer
  5. 5. Recall that a protein is a long chain of amino acids
  6. 6. <ul><li>How many nitrogen bases correspond to an amino acid? </li></ul>Genetic information is encoded as a sequence of three bases in row called codons
  7. 7. Translation tRNA carries the amino acid to the ribosome and inserts it at the proper time
  8. 9. How mutations alter gene expression Original THE FAT CAT SAW THE DOG Deletion THE FAT CAT SAW THE DOG  THF ATC ATS AWT HED OG Insertion THE FAT CAT SAW THE DOG  THE FTA TCA TSA WTH EDO G

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