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A Scientific Approach To Biotechnology

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A Scientific approch to biotechnology between_pic_1 Biotechnology between_pic_2 Biotechnology Help
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Understanding Biotechnology


What is Biotechnology

Overview of Biotechnology

  Then and Now of Biotechnology
 

History of Biotechnology

  Gene Technology
  What is a gene
  Gene Technology Techniques
  Genetic modification myths
  Genes code for proteins
  What is DNA
  Where is DNA
  The Full Set
  What does DNA look like
  What does DNA work
  DNA Unknown

Why do we do biotechnology?


  Why do we do biotechnology?
  Biotechnology for ourselves

Biotechnology for the environment

Biotechnology for food and agriculture

How do you do biotechnology?

  How do you do biotechnology
Finding the gene you want
  Cutting and pasting genes
  Moving genes
  Reading and interpreting genes
  Cloning a gene
  Cloning plants
  Cloning animals
Biotechnology Applications

  Human Uses
  Fighting infectious diseases
  Antibiotics
  Producing human products
  Reproductive technologies
  The human genome project
  Genetic disorders
  Gene therapy
  Cloning
  Stem cells
  Transplantation
  DNA profiling
  Environment
  Biological control of pests
  Protecting threatened species
  Resurrecting extinct species
  Cleaning up and managing
  Researching new products
  Food and Agriculture
  Feed Me
  A problem with weeds
  A problem with insects
  Other reasons to modify crops
  The international scene
  Genetically modified food labeling
  Health and Medical
  Biotechnology in medicines
  Clinical trials
  Gene therapy
  Genes and cancer
  What are ethics
Benefits & Risks of Biotechnology

  Arguments for and against gene
  A nutritionist's view on GM foods
  Balance sheet 2020
  Sustaining the Food supply
Biotechnology Resources

  Ethics of biotechnology
  Conferences and events
  Forums and Communities
  Biotechnology Websites
  Glossary of terms
   
 
 

 

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Sustaining The Food Supply

  Crops generated using laboratory methods which directly manipulate DNA are now commonly called genetically manipulated or GM crops (alternatively trems are transgenic crops, or biotech crops). The year 2006 will mark the 10th anniversary of entry of these crop varieties into the world's agricultural trade.

This controversial first decade of GM use started with rapid adoption of GM crops by the major agricultural commodity exporting countries. The early GM crop users were primarily the farmers operating large scale commercial farms of North America, South America, Australia, and South Africa. These farmers were already the leading users of advanced agricultural technologies to produce food, feeds and fibres at low cost for  trade in competitive world markets.

During this first decade, rapid initial expansion of farm are sown with GM crop occurred despite much controversy about the use of modern genetic techniques in food production, and this healthy and robust controversy about pros and cons of transgenic crops is expected to continue.

In this current paper focuses on the events expected to occur in  the second decade of GM crops – the years leading up to 2016. This is a period in which fundamental limitations of agricultural  resources in developing countries – such as limited arable land area in China, limited land and water supply in India – will need to be reconciled with substantially increased food demand from more prosperous and larger populations.

A change was already occurring towards the end of the first GM crop decade in the global character of GM crop farming, as shown in Figure 1. In this figure it can be seen that during the years 2000-2004, crop area sown with biotech crops in the developing countries started to catch up with the area sown in industrial countries.

In the years following 2006 it can be predicted that transgenic-crop based agriculture will substantially affect economics and human welfare in the developing countries (principally China, India, Argentina, Brazil and South Africa) and change the lives of their smaller landholders. In developing counties during 2004, growth of GM crop area was three-times stronger than it was in industrial countries and 90% of farmers using GM crops were in the developing countries. In 2004, GM crop area sown in developing countries was 34% of the total 81 million hectares of GM crops sown (ISAAA, www.isaaa.org)

It is in developing countries that food costs constitute a much larger fraction of family income than in the rich countries with their relatively cheap food. In developing counties too, more than in rich countries, agriculture usually forms the backbone of the economy, but to meet demand for food, feed, and fibre, land and water resources are often stretched to the limit. Difficulties in managing crop losses to pests, and crop spoilage caused by microbes are more serious in developing counties. For all these these reasons, it seems likely that improvements in farm productivity and avoidance of health and environmental costs of agriculture being provided by transgenic crops to developing nations are likely to provide more compelling arguments for the wider acceptance of GM crops than their current economic successes in developed countries.

Recent good news from the developing world, given in detail  later, includes:

  • Dramatic improvements to Indian cotton crop output sparked by the use of transgenic cotton varieties that contain a protein that deters insect pests.
  • Better health and less pesticide use by Chinese rice farmers who use rice varieties that are protected against insect damage by a GM trait. These new rice varieties enable Chinese farmers to also get more rice from the same land.
  • Good experiences of South African small holder farmers  in growing white maize as their staple food, who are enthusiastic about being saved much hard labour weeding in the hot sun by sowing transgenic maize seed that is herbicide tolerant
   
   
 
   
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