1 / 18

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

Learn Punnett squares, Heredity, Genotype, Phenotype, Mendel's experiments, Dominant and Recessive alleles, Codominance, and Incomplete Dominance. Practice creating Punnett squares and prepare for the final exam.

jwooden
Download Presentation

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

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related