Transcript Genetic Engineering

Can We End World Hunger? Malnutrition and
vitamin deficiencies?
Golden rice is genetically modified rice that now
contains a large amount of A-vitamins. Or more
correctly, the rice contains the element beta-carotene
which is converted in the body into Vitamin-A. So when
you eat golden rice, you get more vitamin A.
Beta-carotene gives carrots their orange color and is the reason why
genetically modified rice is golden. For the golden rice to make betacarotene three new genes are implanted: two from daffodils and the
third from a bacterium
Advantages:
•The rice can be considered a particular advantage to poor people in
underdeveloped countries. They eat only an extremely limited diet lacking in
the essential bodily vitamins. The consequences of this restricted diet causes
many people to die or become blind. This is particularly true in areas of Asia,
where most of the population live on rice from morning to evening.
Are there any disadvantages?
•Artificial Breeding
•Hybridization
•Genetic engineering
•Cell transformation
•Genetically Modified Food
•Transgenic
•Gene pharming
•Cloning
Artificial selection
is the intentional breeding for certain traits,
or combinations of traits, over others
Selective breeding
is an example of artificial selection
is the process when a breeder (of animals) develops a cultivated
breed over time, and selecting qualities within individuals of the
breed that will be best to pass on to the next generation
Hybridization
Crossing dissimilar individuals to bring together
the best of both organisms
Example – crossing a disease resistant plant with
a food-producing plant
Result – a plant that the farmers need to increase
food production
Genetic engineering,
Recombinant DNA technology
Genetic modification/manipulation (GM)
Gene splicing
are all terms that are applied to the direct
manipulation of an organism's genes
Method Used
Cell transformation
Is the genetic alteration of a cell resulting from the
uptake and expression of foreign genetic material
(DNA).
Genetic engineering has four main steps:
1.Isolation of the genes of interest from
donor
2.Insertion of the genes into a vector
3.Transformation of cells of organism to be
modified
4.Tests to isolate genetically modified
organism (GMO)
Genetically modified (GM) foods
have had their DNA altered through genetic engineering
GM foods were first put on the market in the early 1990s.
The most common modified foods are derived from
plants: soybean, corn, canola and cotton seed oil.
http://www.youtube.com/watch?v=2G-yUuiqIZ0
The first commercially grown genetically modified
whole food crop was the Flavr Savr tomato, which
was made more resistant to rotting by Californian
company Calgene
The next GM crops included
insect-protected cotton and
herbicide-tolerant soybean both
of which were commercially
released in 1996. GM crops have
been widely adopted in the
United States.
Genetic Engineering
Or
Gene splicing
Or
Gene manipulations
Gene pharming is a
technology that scientists use
to alter an animal's own
DNA, or to splice in new
DNA, called a transgene,
from another species.
Livestock such as cattle,
sheep, goats, chickens,
rabbits and pigs have
already been modified in
this way to produce several
useful proteins and drugs.
pharming
Cloning is the creation of an organism that is
an exact genetic copy of another. This means
that every single bit of DNA is the same
between the two
clickandclone clonequiz
1. Medical Purposes
2. Reviving endangered species and extinct species
3. Reproducing a deceased pet
4. Cloning humans?????
As a family physician, you often treat children
who suffer from infectious diseases that could
easily be prevented through vaccination. But the
parents of many of your patients cannot afford
the cost of vaccinations. You hear of a new
approach that would reduce the cost to a fraction
of its current price: genetically modified fruits and
vegetables that contain various vaccines. By
simply eating a banana, a child could be protected
against disease - without getting a shot!