Chapter 16.7
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Transcript Chapter 16.7
Designer Plants
AP Biology
Fall 2010
Designer Plants
There is worldwide pressure to produce
more food at lower cost and with less
damage to the environment
Designer Plants
Some farmers are turning to genetically
engineered crop plants
Accomplished by transferring a gene
from one species to another
Designer Plants
Cotton plants are engineered to have an
insecticide gene that kills only the
insects that feed on it
Genetically modified wheat has greater
yields per acre
Transgenic tomato plants survive in
unusually salty soils
Designer Plants
Engineering plant cells starts with
vectors that can carry genes into plant
cells
Designer Plants
An early experiment showed that a
plasmid from a bacterium that normally
causes tumors in plants could be
modified by replacing the tumor gene
with desirable genes
Designer Plants
Such modified bacteria have been
injected into plant cells where they
expressed their “foreign genes”
Designer Plants
Due to the increasing vulnerability of the
world’s food supply, botanists have
collected seeds of the wild ancestors of
crop plants and older, diverse varieties of
plants
Sent them to seed banks to store and
safely preserve plant genetic diversity
Assignment
Write a 3 page paper
Typed, double spaced , size 12 font
Topic: genetic engineering
Pick a side pro or con (get specific)
Introduction (thesis), body (3 ideas), conclusion
At least 3 supporting ideas
○ Remember: idea, supporting details, how does
this relate to thesis
At least 3 sources
http://www.aresearchguide.com/1steps.htm
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