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Handout _1 - Carried out reciprocal crosses phenotype 1 ♂...

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BIS101 Handout #1, Page 1 Professor S. O’Neill Important Features of Gregor Mendel's Experimental Design Experimental system: Pisum sativum (garden pea) 1. True (pure) breeding lines- after many generations of selfing, traits don't change a. selfing (self-fertilization) male and female gametes are from the same individual. b. cross (cross-fertilization) male and female gametes are from different individuals. 2. Study of individual traits (didn't look at the whole plant) defined each trait Example: flower color purple/white flowers 3. Dichotomous traits- only 2 phenotypes for each trait, No in-between phenotypes: long/short stems purple/white petals yellow/green seeds 4. Multiple traits (7) Results of monohybrid crosses (see text) 5. Multiple crosses Experiments were repeated
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