Inheritance survival
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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

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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!


Genetically modified crops

Genetically Modified Crops

GM crops


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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