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B1b 6 Variation

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B1b 6 Variation 6.5 Genetic Engineering Learning objectives What is genetic engineering and how is it achieved? Understand the issues involved. What is genetic ... – PowerPoint PPT presentation

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Title: B1b 6 Variation


1
B1b 6 Variation
  • 6.5 Genetic Engineering

2
Learning objectives
  • What is genetic engineering and how is it
    achieved?
  • Understand the issues involved.

3
What is genetic engineering?
  • Cloning
  • Changes the natural process of reproduction
  • Genetic engineering/modification
  • Changes the organism
  • New characteristics

4
Glow in the dark
5
Whats going on?
  • Changing the DNA
  • Take a small piece from one organism and transfer
    it to another
  • Uses enzymes to cut the DNA in certain place
  • Take the gene that makes a useful protein in
    humans
  • Transfer it to a bacteria
  • Grow loads of bacteria
  • They all produce useful protein

6
  • How is a gene taken from one organism and
    inserted into another?

7
Benefits
  • Transferring gene to an animal at early stage of
    development
  • Animal can develop characteristics
  • Can improve growth rates in plants and animals
  • Plants could produce own pesticide
  • GM food lasts longer
  • Grow in different environments
  • Animal can produce proteins in milk

8
Disadvantages
  • Really new no one knows?!?
  • Pesticide resistant pests?
  • Problems with GM food
  • Often not fertile need to buy more
  • Effects on environment
  • Effects on food chain
  • Un-natural

9
Human engineering
  • Genetic diseases mistake in DNA
  • Quality of life or fatal
  • Faulty DNA could be removed
  • Healthy DNA put into cells at early stage
  • Individual develops
  • Designer babies?
  • Clever, good looking, sporty?
  • Ethnicity, sex, where does it end?

10
Learning outcomes
  • How can genes be transferred between organisms?
  • Why can GM be useful
  • What are some disadvantages of GM?
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