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12/12 & 12/13 - 7 th Grade Agenda

12/12 & 12/13 - 7 th Grade Agenda. Learning Objective: Practice creating Punnett squares Collect HW: Reading & Note Taking p. 85 – 88 Collect HW: Flower (5 Points) Pass Back HW & Test & Grade Printout Flower Dissection Lab Video: Private Lives of Plants (Surviving)

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12/12 & 12/13 - 7 th Grade Agenda

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  1. 12/12 & 12/13 - 7th Grade Agenda Learning Objective: Practice creating Punnett squares Collect HW: Reading & Note Taking p. 85 – 88 Collect HW: Flower (5 Points) Pass Back HW & Test & Grade Printout Flower Dissection Lab Video: Private Lives of Plants (Surviving) Class Reading: p.162 -167 HW: Reading & Note Taking p. 89 – 92 Reminder HW: Science Fair Background due 1/14 & 1/15 (10 Points) Reminder 1st Semester Final Exam 12/17 & 12/18 (50 Points)

  2. Reflection • Prompt: Write 3 facts you know about genetics.

  3. Final Exam on 12/17 & 12/18 • Chapters tested are 1-4 & 10 • 50 multiple choice questions (50 Points) • Study guides and answers are online

  4. What is Genetics? • Passing of traits from parents to offspring is called Heredity • Scientific Study of Heredity is called Genetics

  5. Gregor Mendel 1822-1884 • Austrian Priest • First to study ge_____ • He grew p____ plants to study genetics netics ea

  6. Mendel’s Experiment • What would happen if you cross pollinate a tall plant with short plant? • Why?

  7. 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

  8. 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

  9. 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

  10. Genotype Phenotype TT X tt Tt X Tt TT Tt Tt tt

  11. What are Genotype & Phenotype? • Phenotype: Physical appearance • Genotype: Genetic makeup

  12. Punnette Squares

  13. Practice Creating Punnett Squares BB B B Bb b B b bb Bb Bb b

  14. Practice Creating Punnett Squares Bb B b Bb B B B Bb Bb bb b

  15. Practice Creating Punnett Squares Bb B b bb b B b bb Bb bb b

  16. Practice Creating Punnett Squares GG G G Gg g G g gg Gg Gg g

  17. What is Codominance? • The alleles are neither dominant nor recessive

  18. What is incomplete dominance? • Both alleles are blended in the offspring

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