Heredity and Environment
By germinating hybrid tobacco seeds first in darkness and then in light, students make interesting observations using this challenging kit. Students set up controlled experiments that provide mathematical data to test their theoretical genetic hypothesis about heredity and the factors determined by the environment. They see how a recessive trait becomes evident. Students also germinate the hybrid tobacco seeds with one normal and one albino gene. Students also stimulate shoot production and examine the relationship of the dominant gene (chlorophyll production) to the recessive gene. Finally, students make conclusions concerning the genotype relevant to a visible phenotype.
Details at a Glance
- 1 Day | 1 ~50 minute class period
- 1 Activity
- Accommodates 1 class, with 15 groups of 2 students
- Consumables service 30 students
- Meets our criteria for supporting literacy
- Requires a water source
Scientific Concepts
• Discover which is more important: Heredity or Environment
• Controlled experiment provides mathematical data to test hypotheses
• Discover how a recessive trait becomes evident
• Examine the relationship of a dominant gene to the recessive gene and draw conclusion concerning the genotype relevant to a visible phenotype
Guides & Student Sheets
Our kits and modules provide you with everything you need so you can open, review, and teach the material confidently the next day.
- Full downloadable Teacher Guide with background information, detailed instruction, example data and answers
- Downloadable Student Sheets with age appropriate background information, full procedure(s), and analysis questions
- All materials necessary to carry out the investigation
- Safety Data Sheets
Kit Components
- 60 Germinating papers
- 15 Germinating dishes, clear plastic, two-section
- 15 Germinating dishes, opaque plastic, two-section
- 1 Albino tobacco seeds, vial
- 30 Student Worksheets and Guides with Data Charts
- 1 Teacher’s Guide