Definition: Use of living organisms (microorganisms) to make new products or carry out new...
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Transcript of Definition: Use of living organisms (microorganisms) to make new products or carry out new...
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Basics of Biotechnology &
Genetics
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What is biotechnology?
Definition: Use of living organisms
(microorganisms) to make new products or carry out new processes (solve problems).
New product Yogurt
New Process Tissue culture -
propagation method that rapidly multiplies plants
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History of Biotechnology
Use of yeast to make bread rise.
Use of bacteria to produce various kinds of cheeses and other dairy products.
Use of microorganisms to transform fruit or grains into alcoholic beverages.
Use of bacteria to “produce” silage
E.coli bacteria used to produce insulin. It became one of the
first commercial products created by genetic engineering.
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Basics of Genetics
Austrian monk, Gregor Johann Mendel discovered the effect of
genetics on plant characteristics with his experimentation with garden peas
Heredity transmission of
characteristics from an organism to its offspring through genes in reproductive cells
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Basics of Genetics
Genes Segments of double
stranded DNA that determines the individual characteristics of living things▪ Ex: plant height at
maturity, flower color, ears of corn per stalk.
Generation is the offspring, or progeny, of common parents.
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DNA – Genetic Code of Life
Chromosome structure that holds the
genetic information of a cell DNA is wound tightly to
form the chromosome. DNA
deoxyribonucleic acid coded material in all cell
nuclei that determines what that cell and its successive cells will become
Shaped like a twisted ladder called a double helix
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DNA – Genetic Code of Life
Gene A small section of DNA. There are thousands of
genes on a strand of DNA.
Gene mapping The process of finding
and recording the locations of genes
Bases Similar to rungs of a
ladder that hold the two sides of the DNA strands together
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DNA – Genetic Code of Life
The bases are: Adenine (A) - only pairs with “T” Thymine (T) – only pairs with “A” Guanine (G) – only pairs with “C” Cytosine (C) – only pairs with “G”▪ Example:▪ A – T▪ G – C▪ T - A
The sequence of the bases between the DNA strands is the code by which a gene controls a specific trait Example:▪ baldness in humans, tendency of
female goats to have twin offspring
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Biotech Processes & Practices
1. Genetic Engineering
2. Cloning3. Indicator Species4. Bioremediation5. Biostimulation6. Phytoremediation7. Animal
Reproduction and Prodution
8. Biofuels
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Genetic Engineering
Process of moving genetic information in the form of genes from one cell to another.
Developed in the early 1980’s
Gene splicing or Recombinant DNA technology process of removing and inserting
genes from one organism and inserting them into the DNA of another 1. Alter a plant’s susceptibility
to disease.2. Make a plant resistant to
insects.3. Process in animals is newer
and not as well developed techniques exist yet.
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Cloning
Known as “micropropagation” in plants
Creating an exact genetic duplicate of another organism.
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Indicator Species
One of the oldest methods of biological detection
Uses plants, animals and microbes to warn us about pollutants in the environment
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Bioremediation
A set of techniques that use living organisms to clean up toxic wastes in water and soil.
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Biostimulation
Adding nutrients such as nitrogen and phosphorus to stimulate the growth of naturally occurring beneficial microbes for faster, more efficient work.
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Phytoremediation
The process of plants absorbing or immobilizing pollutants.
First tested actively at sites in the 1990’s.
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Animal Reproduction & Production
The processes used in improving the efficiency of reproduction and production.
These are considered the more conventional (traditional) uses of biotechnology.
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Biofuels
Fuels composed of or produced from biological raw materials
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Importance of Recombinant DNA Technology Joining of DNA from two
different species and inserted into host organism
Improve plants’ and animals’ performance through the manipulation of genes. Alter characteristics or
performance of microorganisms
Great potential for controlling disease, insects, weeds, and other pests
Less use of chemical pesticides Potential for helping clean the
environment
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Biotech Concerns
Safety State and federal government
monitor the development of newly developed biotech crops
Consumer resistance remains high due to safety of the environment and human health concerns
Some people can create a fear of the unknown
Labeling of genetically modified organisms (GMO) foods▪ many people feel if a product is
safe it should be labeled Effect GMO’s may have on
biodiversity
Ethics System of moral
principles that defines what is right and wrong in a society
The ability to manipulate genetics of living organisms raises important ethical questions about how biotechnology should be used
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Biotech in the Plant Industry
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Herbicide & Insect Resitant Crops
Herbicide – tolerant soybean Also known as “RoundUp
Ready Soybeans” contains a gene that
provides resistance to one or two broad spectrum herbicides.
Other RoundUP Ready crops: Canola, Corn, Cotton, Alfalfa, Lettuce, Potatoes, Sugar Beets, and Tomatoes
Insect- resistant corn (Bt corn) contains a built-in
insecticidal protein from a naturally occurring soil microorganism (Bt – Bacillus thuringiensis) that gives season- long control of corn borers.
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Improved Nutrition & Shelf-life High Oleic Peanut
genetically modified to produce nuts in high oleic acid that results in longer life for nuts, candy and peanut butter
High Oleic Sunflower modified to produce
sunflower oil that is low in trans-fatty acids
Delayed- ripening tomato the longer shelf life has
commercial advantages in harvesting and shipping
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Tissue Culture
Also known as micropropagation Using a very small, actively growing part of
the plant to produce a large number of new plants
Example: African violets