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1/12 & 1/13 - 7 th Grade Agenda

1/12 & 1/13 - 7 th Grade Agenda. Learning Objective: Learn about Punnett Squares Collect HW: Reading & Note Taking p. 89 – 92 BrainPop Genetics, Heredity & Genetic Mutations Video: Genetics Textbook Reading 170 - 174 HW: Reading & Notetaking p.93– 96

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1/12 & 1/13 - 7 th Grade Agenda

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  1. 1/12 & 1/13 - 7th Grade Agenda Learning Objective: Learn about Punnett Squares Collect HW: Reading & Note Taking p. 89 – 92 BrainPop Genetics, Heredity & Genetic Mutations Video: Genetics Textbook Reading 170 - 174 HW: Reading & Notetaking p.93– 96 Reminder 1st Semester Final Exam 1/17 & 1/18 (50 Points) Reminder: HW: Science Fair Background due 1/19 & 1/20 (10 Points)

  2. Reflection Tt • Prompt: Complete the following Punnette Square T t T Tt t

  3. Reflection Tt • Prompt: Complete the following Punnette Square T t TT T Tt Tt tt Tt t

  4. 1st Semester Final Exam on 1/17 & 1/18 • 50 Questions – 50 Points • Chap 1: What is Life Science • Chap 2: Using Light • Chap 3: Cell Structure & Function • Chap 4: Cell Processes & Energy • Chap 10: Structure & Function of Plants • Study Guide for these chapters available at CCMS.CCUSD.ORG

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

  6. 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

  7. 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

  8. 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

  9. Genotype Phenotype TT X tt Tt X Tt TT Tt Tt tt

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

  11. Punnette Squares

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

  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 GG G G Gg g G g gg Gg Gg g

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

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

  18. Human chromosomes • Each human body cell contain 23 chromosomes pairs or ____ chromosomes. • There are 35,000 genes in the chromosomes • The genes are li____ up in the same order on both chromosomes 46 ned

  19. Meiosis • Meiosis is the process by which the number of chromosomes is reduced by h____ to form sex cells – spe___ and eggs. alf rm

  20. Meiosis Meiosis I Meiosis II

  21. Science Fair Background • 10 Points • Due 1/13 & 1/14 • Research and write 2 paragraphs related to your topic. • Do not write your opinion. It must contain researched facts.

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