Genetically Modified Foods

1. GENETICALLY MODIFIED (GM) FOODS
Ritika Mahmuda
1511003
Maisa Rahman Sakura
1511028

2. What is GM Food?
Foods containing an added gene sequence.
Foods having a deleted gene sequence.
Animal products from animals fed GM feed.
Products produced by GM organisms.

3. Why are foods genetically modified?
In order to get desired phenotypes.
To reduce strain on nonrenewable resources.
For reducing use of pesticides and herbicides.
For improving crops quality.
To improve nutritional quality.
Easing of world hunger.

4. How can DNA be moved from one organism to
another in GM food preparation process?
 Find an organism with the desired trait.
 Isolate the gene sequence that codes for the desired
trait.
 Insert the gene sequence into the genome of the plant
cell.
 Allow the genetically altered cell to grow into a plant.
 Allow the plant to propagate.

5. Diagram of moving of DNA from one organism
to another in GM food preparation process

6. Examples of GMOs
 Golden rice – rice that contains beta-carotene (Vitamin A), which is not
found in regular rice.
 Bt corn – corn that contains a chemical normally found in a bacterium
(Bacillus thuringiensis) that is toxic to insects but not to humans.
 Herbicide resistant plants.

7. Advantages of GM Foods
Disease resistance: 1.Viruses, fungi, bacteria  plant diseases
Drought resistance: 1.More population  ↑ land for housing, ↓ land for
farming 2.Land unsuited for plant cultivation  Africa, dessert 3.GM crops  grow in
draughts or ↑ salt-content soil
Nutrition: 1.Single crop (rice) cannot give all the nutrition needed. Lack vitamin
A  blindness 2.GM food: golden rice has Vitamin A (beta-carotene) 3.GM food: with
enhanced iron
Pharmaceuticals: 1.Edible vaccines in tomatoes and potatoes 2.Easier to
ship, store, administer than traditional injections
 Improved crop quality: 1.Development of frost resistant crops
2.Development of disease resistant crops 3.Development of flood resistant crops

8. Disadvantages of GM Foods
 Environmental hazards: It can affect the environment by
creating unknown substance which are very harmful to our country as
well as a big threat to our environment of the whole world.
 Human health risks: 1.Allergenicity 2.We already have allergies
to peanuts and other foods… 3.Introducing gene may create more
allergies 4.Unknown effects on human health.
 Economic concerns: 1.Lengthy and costly process 2.Farmers
from developing countries cannot afford 3.More gap between rich and
poor
 Other invention  discouraged/stopped:
1.Suicide gene technology 2.Only one growing per season 3.Next time
would produce sterile seeds that do not germinate

9.  Government agencies should regulate GM foods.
 GM foods in the United States are required to be
labeled only if the nutritional value is changed or
a new allergen is introduced.
 Creating a balance.
Consumers, the government and scientists should
be responsible for weighing the benefits against
the costs.
 So are GM foods a good or bad thing?
 It depend on each individual case.

10. THANKS TO ALL OF YOU FOR HAVING
PATIENCE & SUPPOTING US.