2. Todays Objectives: SOL BIO.2e, BIO.6d-BIO.6g Given a description of Mendels work with garden peas, explain and/or identify Mendels principles (dominance, segregation, independent assortment, or the processes involved). Identify the following: recessive, genetics, gene, genotype, phenotype, heredity, heterozygus, homozygous.

3. Gregor Mendel (1823-1884) Augustinian monk Mendel was the first person to trace the characteristics of successive generations of a living thing (pea plants).

4. Mendels Laws of Heredity Hereditary factors do not combine, but are passed intact (Law of Segregation) Each member of the parental generation transmits only half of its hereditary factors to each offspring (with certain factors "dominant" over others) (Law of Dominance) Different offspring of the same parents receive different sets of hereditary factors (Law of Independent Assortment)

5. Why Peas? Quick reproductive cycle Self-pollinating He studied simple traits, traits that occurred in only one of two possible variations.

6. Definitions Trait Gene Allele Dominant Recessive Heredity Genetics Hybrid Phenotype Genotype Homozygous Heterozygous