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Human control

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Human control

  1. 1. Human Control
  2. 2. Methods of Genetic Manipulation
  3. 3. Genetic Modification Genetic modification (GM) is a set of technologies that enable scientists to alter the genetic make-up of organisms Modified crops may have Increased resistance to disease Increased productivity Improved taste and quality A shorter time to maturity
  4. 4. Alongside the enormous possibilities there are risks and hazards associated with DNA technology While the cloning of mammals which are genetically identical such as sheep - “Dolly” allow rapid and selective breeding of desirable genotypes it also means that it is theoretically possible to do the same with humans. (See http://www.animalresearch.info/en/medical- advances/timeline/cloning-dolly-the-sheep/)
  5. 5. Ethical Issues Bio-ethical issues associated with genetic modification include Health risks to humans in eating GM food Possible environmental impact if genes transmit into other species Pain and suffering to animals  Identification of “superior” traits – physical and intellectual
  6. 6. Commercial Issues Who has access to the technologies? Who owns the technology? Will patents reduce access?
  7. 7. Plant Culturing
  8. 8. Genetic Screening
  9. 9. Genetically Modified Fruits
  10. 10. Humans can control aspects of their lifestyle Diet Eat more fibre Eat less fat Eat less sugar  Eat less salt  Restrict alcohol Drink more water  Encourage breast feeding (of babies!)
  11. 11. Exercise We live in a largely sedentary society, fortunately we have become more aware of the benefits of regular exercise Improved muscle tone Decrease in body fat Improved cardiovascular efficiency Poor diet and lack of exercise can lead to arteriosclerosis and hypertension which can lead to heart attacks or strokes
  12. 12. Drugs A drug is any substance taken that will affect the functioning of the body. Many drugs are useful while others are harmful and lead to addiction Heroin Cocaine Nicotine Alcohol (in large concentrated amounts) Marijuana
  13. 13. Ageing Research indicates that ageing may be caused by the decreased effectiveness of DNA repair enzymes in the nucleus leading to a reduced ability for the DNA to semi-conservatively replicate without damaging mutations occurring which can lead to cancer

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