Download presentation
Presentation is loading. Please wait.
Published byRoy Hill Modified over 9 years ago
1
Done by: Alisa Insyirah Rashvin Pamela
2
Food items that have had their DNA changed through genetic engineering. Conventional method was through time-tested conventional breeding of plants and animals. GMO combines genes from different organisms (this is known as recombinant DNA technology), and the resulting organism is said to be "genetically modified," "genetically engineered," or "transgenic." GM products include medicines and vaccines, foods and food ingredients, feeds, and fibers.
3
Biotechnology is not very precise. During the genetic manipulation process, the location where a gene is inserted into an organism's genetic code is uncontrollable. Also a stable expression of the gene into the new genetically engineered organism is not guaranteed. This is why when scientists tried to clone an animal; they ended up with hundreds of deformities and other mutations before they finally succeeded.
4
Example 1: Scientists discovered an anti-freeze gene in a plant in Antarctica They isolated the gene sequence responsible for the Antarctic plant's frost resistance and inserted it into a test plant They found that found that under certain conditions the test plant had the same frost- resistant characteristics.
5
Example 2: DNA from the flounder fish (which produces a kind of natural anti-freeze in this cold-water species) introduced into GMO fruits to provide greater frost-resistance.
6
Higher crop yield by: Unexpected frost can destroy sensitive seedlings. With an antifreeze gene, these plants are able to tolerate cold temperatures that normally would kill unmodified seedlings Economic benefits: Reduced economic losses due to frost than from any other weather-related phenomenon.
7
The increasing use of GM in major crops has caused a major power shift in agriculture towards Biotechnology companies, which are gaining more control over the production chain of crops and food, and over the farmers that use their products. "They're now turning those seeds into intellectual property, so they have a virtual lock on the seeds upon which we all depend for our food and survival." - Jeremy Rifkin
8
Threat to biodiversity Accidental gene transfer to non- target species (eg. Weeds superweeds- harder to kill) Insect pests will develop resistance to the new genes (organic crops will suffer even more) Threat to our health Might be allergic to the gene (Brazil nut genes combined into soybeans- people allergic to that nut go into anaphylactic shock and can cause death)
9
http://www.disabled- world.com/fitness/gm-foods.php http://www.disabled- world.com/fitness/gm-foods.php http://www.gmfreeireland.org/crops/index. php http://www.gmfreeireland.org/crops/index. php http://www.csa.com/discoveryguides/gmfo od/overview.php http://www.csa.com/discoveryguides/gmfo od/overview.php http://www.geneticengineering.net/atomat ofishorafishtomato.htm http://www.geneticengineering.net/atomat ofishorafishtomato.htm http://www.actionbioscience.org/biotech/s akko.html http://www.actionbioscience.org/biotech/s akko.html
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.