Genetically Modified Foods

pumpkincentersulkyΒιοτεχνολογία

16 Δεκ 2012 (πριν από 4 χρόνια και 10 μήνες)

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GENETICALLY MODIFIED
FOODS

Biotechnology in the kitchen

Farming and Genetics


People have been farming for over 10,000 years.


Artificial selection has been in practice for almost as
long.


Genetic mutations sometimes must be sustained by
man.


Purposely changing the genetics of crops is not a
new idea.

Artificial Selection


Corn


Wheat


Potatoes


Genetic Changes


Other ways to change genes besides artificial
selection


Chemicals have been used


Radiation has been used


These causes of mutations and have been practiced
for some time.

Chemical


Triticale


Seedless fruit


Icecube

lettuce


Barley

Radiation


Rio Red grapefruit


Clearfield Corn


Creso



Golden promise Barely


California rice


Bread wheat


Genetic Engineering


Taking beneficial traits from one plant to another.


Allows for traits to cross the species (and even
Genus) barrier.


Less time consuming than artificial selection.


Less risky than mutations by chemicals and
radiation.

How Genetic Engineering Works


Identification of a Gene


Replication of desired Gene (or artificial creation)


Separation from DNA strand


Addition to other strand


Any Question about the science?

Golden Rice


Dr. Ingo
Potrykus


Reduce vitamin A deficiency


What did they need to do?


Why is the rice golden


Genes from daffodils make beta carotene


Patented in 1999


Not yet in farmers hands

Reaction to Golden Rice


A
Frankenfood


Some say it goes against God’s plan


Others say it goes against nature


These arguments have been reformed and are used
to describe GMO’s in general.

Some Think GMO’s are Bad


http://www.youtube.com/watch?v=p_LGt1sw0NE

Possible Negatives


The Terminator Gene


Patenting Life


No Reduction in Chemicals


Focus somewhere else

Others Defend GMO’s


http://www.youtube.com/watch?v=
-
v9HhuUr9cI

The Positives


Increased income to farmers.


No negative health effects


Reduced pesticides and tilling


Solution to the patent problem


Drought resistance.


Precautionary principle

Discussion


What other possible negatives could there be?


What other positives could there be?


Which side of the fence do you sit and why?


Does it bother you that you may have eaten
genetically modified food without knowing?


Any other thoughts about GM foods?

The Current Reality of GMO’s


Genetically modified foods are in production.


There are more than just GM foods.


These foods are in production and it appears as
though only more are coming.