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1/17 & 1/18 - 7 th Grade Agenda

1/17 & 1/18 - 7 th Grade Agenda. Learning Objective: Learn about Meiosis & RNA Collect HW: Reading & Notetaking p. 93 - 96 1 st Semester Final Exam (50 Points) Video: Patterns of Inheritance Class Reading 175 – 181 HW: Reading & Note taking 97 – 98

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1/17 & 1/18 - 7 th Grade Agenda

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  1. 1/17 & 1/18 - 7th Grade Agenda Learning Objective: Learn about Meiosis & RNA Collect HW: Reading & Notetaking p. 93 - 96 1st Semester Final Exam (50 Points) Video: Patterns of Inheritance Class Reading 175 – 181 HW: Reading & Note taking 97 – 98 Reminder: HW: Science Fair Background due 1/19 & 1/20 (10 Points) Last Day to Turn in Late work for this Semester 1/24 & 1/25

  2. Last Day to Turn in Late work for this Semester 1/24 & 1/25

  3. Reflection • Prompt: Write 2 differences between a dominant allele and a recessive allele.

  4. 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

  5. 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

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

  7. Punnette Squares

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

  9. Practice Creating Punnett Squares SS S S Ss s S s ss Ss Ss s

  10. Practice Creating Punnett Squares Rr R r rr r R r rr rr Rr r

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

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

  13. 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

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

  15. Meiosis Meiosis I Meiosis II

  16. Protein Synthesis • Cells use information from a gene on a chrom_________ to produce a specific protein. osome

  17. RNA • Before protein synthesis can take place a “messe____” carry the genetic code from the DNA inside the nucleus into the cytoplasm. • This genetic messenger is called ribonucleic acid or RNA nger

  18. RNA

  19. DNA vs RNA DNA RNA • Master Copy • Two Strands • Never leave nucleus • Copy • One Strand • Leaves the nucleus

  20. Science Fair Background • 10 Points • Due 1/19 & 1/20 • Research and write 2 paragraphs related to your topic. • Do not write your opinion. It must contain researched facts.

  21. 1st Semester Final Exam • 50 Points

  22. Reflection • Prompt: Write 3 facts you learned in the video.

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