It's Alive! Carolina's Classroom Genetics

49 Pages·2008·1.72 MB·English

by  Trey Williams

Carolina Biological Supply Company
It's Alive! Carolina's
Classroom Genetics
www.carolina.com
800-334-5551
2008
Burlington, NC
Session Objectives
• Why use Wisconsin Fast Plants®?
• Why use Drosophila?
• Why use C-FERN®?
• Why use corn?
• To introduce how each of these model systems can be
used to effectively demonstrate the basic principles of
genetics in the classroom
Wisconsin Fast Plants®: An
Excellent Teaching Tool
• An entire life cycle
in about 40 days
• Ideal for inquiry-
based science
• Self-watering
• Flowers 14–18
days after planting
the seeds
Four Requirements for Success
1. Constant, cool fluorescent lighting positioned
5 to 10 cm above the plants
2. Constant source of moisture
3. Room temperature (68 to 78° F)
4. Nutrition: 2–3 fertilizer pellets per cell
Flower Structure of Brassica rapa
Pollination with Bee Stick
Mendelian Genetics with Brassica rapa
• A genetically controlled mating system prevents
self-fertilization
• Ideal for studies on the nature and inheritance of
variation
• Distinctive mutant phenotypes
Readily Observable Phenotypes
Hairy Plants
Standard vs.
Yellow-Green Yellow-Green
High Anthocyanin
Expression
High Anthocyanin vs. Anthocyaninless vs.
Anthocyaninless Yellow-Green
Monohybrid Crosses
Purple pigment is dominant to Non-Purple
pigmentation
(ANL) (anl)
P Generation
1
anl/anl
ANL/ANL
(hairless)
F Generation
1
Purple (ANL/anl)