Using Genetic Engineering in Agriculture


14 déc. 2012 (il y a 9 années et 2 mois)

421 vue(s)

Genetic Engineering

Process of changing an
organism’s DNA to give the
organism new traits

Transgenic organisms

contain genes from other

Using Genetic Engineering

Transgenic microorganisms

bacteria are used to produce important
substances for health and industry


The gene for human insulin can be put
into plasmids. The bacteria would now
be considered transgenic and would
make human insulin that can be
collected to treat people with

Using Genetic Engineering in


faster growing animals that are
resistant to disease due to the injection of
hormones and antibiotics

Farmers use genetic engineering to produce
animals that have desired traits, such as high
milk production.

Important part of our food supply. Plants
are inserted with genes that make them
resistant to disease, able to produce
their own insecticide, resist weed
chemicals and increase vitamin content.

Genetic Screening
: the process of testing
DNA to determine a person’s risk of
having or passing on a genetic disorder.

Can help save lives but also lead to
difficult choices.

Why might genetic screening raise ethical
concerns about privacy?

Gene Therapy
: replacement of a defective
or missing gene,

the addition of a new
gene into a person’s genome to treat a

Very experimental and controversial

Humans can influence the genotype and
phenotype of organisms by

Selective Breeding is when we (humans)
select the traits we think are most
beneficial to an organism and breed
organisms specifically to obtain that
particular trait.

Hybridization and inbreeding.

crossing dissimilar
individuals to bring together the best of
both organisms

Offspring called hybrids

Cannot reproduce

Zorse: zebra +

Zonkey: zebra
+ donkey

Zony: zebra + pony


continued breeding of
individuals within the same family line in
order to maintain the desired

Can be dangerous because a chance of bringing
together two recessive alleles

Has pros and cons