Description

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, stimulate shoot production, examine the relationship of the dominant gene (chlorophyll production) to the recessive gene and make conclusions concerning the genotype relevant to a visible phenotype. This is an excellent Lab-Aid to correlate heredity with environmental influences.

• Maximum 45 students/15 groups
• One+ 50 minute class period
• Student worksheets incorporate literacy skills

Concepts Illustrated:

• 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 a recessive gene and draw conclusion concerning the genotype relevant to a visible phenotype