In other units, students use the latest instrumentation to explore the chemistry of batteries and to measure current and voltage in electric circuits. Broccoli and cauliflower, two varieties of the same species, are examined in order to compare their observable traits. Students make a family tree. The family tree of the first yellow parakeets is studied. Phenotype and Genotype - Rules of Mendelian genetics.
Student exercises on dominant and recessive alleles.
Probability in Genetics Student select beads from two different bags to simulate the recombination of genes. The probabilities of multiple traits are described using a Punnett square. Complex Traits and Human Genes - Students look for familiar genetic variations among their classmates, e.g., hair color, freckles, attached ear lobes, and so on. Genetic Diseases - The genetics of sickle cell anemia is described. Students are encouraged to use the Internet to research other genetic diseases.