GLEs: 1.2.7 Understand how genetic information (DNA) in the cell is encoded at the molecular level and provides genetic continuity between generations. 1.2.6 Understand cellular structures, their functions, and how specific genes regulate these functions. 1.1.6 Analyze structural, cellular, biochemical, and genetic characteristics in order to determine the relationships among organism.
Lesson: [All Periods] Mr. Reimer explains that traits that are visible in organisms are "phenotypes" and the [pair of] genes that code for each trait are an organisms genotype. Terms to recall are phenotype, genotype, sister chromatid, homologue, chromosome, gene, DNA. Students use "Human Genetic Traits" handout to identify their own traits and tally number of students with each trait in each class. Some discussion on types of chromosomes and uniqueness of sex chromosomes. On worksheet students identify alleles for traits based on dominance (trait appearing in a heterozygous individual).
Assignment: None; bring worksheet to class tomorrow.
