Recombinant DNA and Cloning


Oct 22, 2013 (3 years and 9 months ago)


Recombinant DNA and Cloning

The Impact of Biotechnology

Honors Genetics

Ms. Susan Chabot

Lemon Bay High School

Terms to Know

Restriction enzymes:
allow the DNA to be cut and
spliced at VERY specific locations.

carriers of DNA molecules; usually bacteria.

circular DNA found in bacteria.

Recombinant DNA:
original carrier DNA + introduced
sections of DNA.

when the bacteria divide, millions of copies of
the original recombinant DNA are made.


Impact of Biotechnology

Biotechnology: use of modified organisms or their products
to enhance our lives.

Ethical Dilemmas:

Patenting genes for ownership.

Patents offer scientists a chance to fund further research.

Limited availability of seeds to farmers.

Concentrates crop ownership to biotech companies, out of farmer’s hands.

Impact of GM foods in our own bodies.

Enough testing to identify risks/benefits?

Biotech and Medicine:

Too much information too early?

Inability to get medical insurance.

Genetically Modified Plants

Resistance to insects,
weeds, and viruses.

Enhanced oil content.

Delayed ripening.

GM foods can also be
modified to increase the
nutritional content of

GM rice (golden rice) has
been modified to contain
more of the building blocks
needed to produce
Vitamin A.

Reduced blindness in
poorer nations.

Over a dozen genetically
modified crops approved
to grow in the US.

45% of US corn crop.

85% of soybean crop.

60% of processed food
contains GM foods.

GM Animals

Embryo splitting has
created commercially
cloned GM organisms for
25 years.

Don’t have to wait until
adulthood to see if desired
traits were inherited.

Cloned for desirable traits
such as:

High milk production.

Speed in race horses.

Transgenic animals.

Transgenic animals
are produced when
one animal’s desired
traits are recombined
into another animal.

Human genes
transferred into sheep
for production of
human proteins.

Chapter 1 Essential Points

Page 4: #1: Mendel’s Work.

Page 5: #2: Chromosome Theory of Inheritance

Page 8: #3: Central Dogma of Biology

Page 12: #4: Biotech has revolutionized agriculture and
pharmaceutical industries. Genetic testing and gene therapy
has impacted how we treat and diagnose genetic diseases.

#5: Recombinant DNA technology has given rise
to several new fields in science.

Page 14: #6: Using model organisms allows us to use
genetics and biotech to understand human health.

#7: Policies and regulations that pertain to
genetic technology is lagging behind the technologies that are
being introduced.