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Inheritance & Survival. Genetic Engineering. Genetic Engineering. Why can we not use pig organs in humans? There is a shortage of hearts and kidneys for transplant – why not use a pig? Biology text book p188. Manufacturing Insulin. Insulin is needed to keep diabetics alive.

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inheritance survival

Inheritance & Survival

Genetic Engineering

genetic engineering
Genetic Engineering
  • Why can we not use pig organs in humans?
  • There is a shortage of hearts and kidneys for transplant – why not use a pig?
  • Biology text book p188
manufacturing insulin
Manufacturing Insulin
  • Insulin is needed to keep diabetics alive.
  • Human insulin works best with humans
  • It is possible to obtain small amounts of human insulin from dead bodies.
manufacturing insulin1
Manufacturing Insulin
  • There are insufficient supplies of human insulin to meet demand.
  • Genetic engineers have devised ways of taking the human insulin gene – putting that gene into bacteria that then make insulin.
making insulin
Making insulin
  • The gene for insulin is “cut” from the DNA of a human.
  • This is done by using enzymes.
making insulin1
Making insulin
  • Plasmids (small circles of DNA) are obtained from bacteria.
  • These plasmids are then cut open with enzymes.
making insulin2
Making insulin
  • The human insulin gene is “spliced” into the bacterial plasmid.
  • The plasmid is re-introduced to the bacteria.
making insulin3
Making insulin
  • The bacteria are grown in large tanks until there are millions of them.
  • All the plasmids will be busy making “human” insulin
making insulin4
Making insulin
  • This insulin can then be used by diabetics!
gm crops
GM Crops
  • Read carefully through the sheet entitled “Genetic Modification”
gm crops1
GM Crops
  • Make a list of the advantages of GM crops.
  • Make a list of the reasons people maybe be against the use of GM crops.
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