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12/8- 7th Grade Agenda Learning Objective: Learn about Genetics Collect HW: Reading & Notetaking p.189-190 Classwork: Chap 10 Study Guide Textbook Reading p.392 - 397 HW: Reading & Notetaking p.191 Reminder HW: Science Fair Background due 1/13 & 1/14 (10 Points) Reminder HW: Bring a flower due 12/9 & 12/10 (5 Points) Reminder: Chapter 10 Test on 12/11 &12/12 Reflection • Prompt: Why are there more Angiosperms than Gymnosperms? Reminder Homework for 12/9 & 12/10 HW: Bring a large flower in a plastic bag w/ your name on it. that we will observe in class: Best to bring a Lilly Next best is to bring a large flower where you can see the pistil and stamen. You can go to a florist and ask them of any old flower that they are going to throw away 5 Points What is Genetics? • Passing of traits from parents to offspring is called Heredity • Scientific Study of Heredity is called Genetics Gregor Mendel 1822-1884 • Austrian Priest • First to study netics ge_____ ea plants • He grew p____ to study genetics Mendel’s Experiment • What would happen if you cross pollinate a tall plant with short plant? • Why? What is a allele? • One part of a gene pair. Alleles represent different varieties of one trait such as height of pea plant. • Two alleles form a gene pair What is a Dominant Allele? • One whose trait always shows up in the organism when the allele is present • Dominant allele is represented by a CAPITAL letter What is a Recessive Allele? • A recessive allele is always covered up or masked whenever the dominant allele is present • Recessive allele is represented by a lowercase letter Phenotype Genotype TT X tt Tt X Tt TT Tt Tt tt What are Genotype & Phenotype? • Phenotype: Physical appearance • Genotype: Genetic makeup Reminder Homework for 12/12 & 12/13 HW: Bring a large flower in a plastic bag w/ your name on it. that we will observe in class: Best to bring a Lilly Next best is to bring a large flower where you can see the pistil and stamen. You can go to a florist and ask them of any old flower that they are going to throw away 5 Points