GeneticsCh22

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Author:
victimsofadown
ID:
186033
Filename:
GeneticsCh22
Updated:
2012-11-29 08:44:35
Tags:
GeneticsTest3
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GeneticsTest3
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  1. How have recombinant DNA approaches been used to generate different types of vaccines?
    • Subunit vaccines: one or more surface proteins from the virus/bacterium are inserted in a vector then retrieved/purified from the host. (hep B)
    • Edible vaccines: produced direct in food/pants with a gene from a huamn pathogen.  Eating the food triggers immune response.
  2. What impact are transgenic crops having on the agricultural industry?
    • Herbicide resistance
    • Pesticide resistance
    • Nutritional value modification (golden rice)
  3. How can enhanced characteristics be created in a transgenic crop or animal?
    • Animals: isolate newly fertilized eggs, or stem cells, and inject purified cloned DNA w/ vegtor and transgene of interest.  Place eggs into mouse.  Baby mice screened for trangenicity by a tail sample.  All future generations will have the trait.
    • Golden rice grows with the increased nutritional content
    • Cows can secrete the product in their milk
    • Salmon exessing hgh can grow 10x larger
    • GloFish
    • Rabbits that glow in the dark
  4. What are amniocentesis and CVS? What can they test for?
    • Amniocentesis: needle inserted through abdominal and uterine walls to recover amniotic fluid and fetal cells. 
    • Chorionic villus sampling: Cells from the fetal portion of the placental wall are sampled through a vacuum tube.
    • These can be used for karyotyping, genetic testing, and other procedures

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