BISC 219/2009:Creating a Transgenic Organism

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Wellesley College BISC 219 Genetics

At the end of this semester long series you will have mastered the following skills and concepts using both microorganisms and a multicellular organism.

Schedule of Experiments

Lab # Dates Activity
1 9/2 - 9/8 set-up of plant transformation
Independently 9/5 - 9/13 transfer of explants to selective medium; induce shoots
5 9/30 - 10/6 transfer shoots to root inducing medium
7 10/15 - 10/21 transfer plantlets to soil
9 11/12 - 11/18 GUS activity assays; set up PCR reactions
10 11/19 - 11/25 Gel electrophoresis of PCR product
11 12/9 Plant Lab Report Due for all students


Experimental Objectives:

In this semester long experiment you will:

  1. use the Agrobacterium system to introduce a foreign gene, the β -glucuronidase gene (gusA) of E. coli, into the cells of tobacco
  2. take advantage of the totipotency of plant cells and use these transformed cells to regenerate genetically engineered plants
  3. confirm that the regenerated plants are transformed by
    1. measuring the activity of the introduced enzyme, β–glucuronidase (GUS) spectrophotometrically and histochemically
    2. PCR to test directly for the presence of the introduced genes and
  4. become adept at sterile technique.