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Warm Up Activity

Warm Up Activity. Quietly work on the “counting chromosomal content” worksheet. (5 minutes). Question?. What does DNA code for?. ANSWER. The nitrogen bases found in DNA code for the proteins your body makes. Those proteins determine what traits you will have. (Eye color, hair color etc..).

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Warm Up Activity

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  1. Warm Up Activity Quietly work on the “counting chromosomal content” worksheet. (5 minutes)

  2. Question? What does DNA code for?

  3. ANSWER • The nitrogen bases found in DNA code for the proteins your body makes. Those proteins determine what traits you will have. (Eye color, hair color etc..)

  4. Agenda • Chocolate chip cookie recipes • Notes on mutations • Mutations Worksheet

  5. Crossing Over Crossing Over = The exchange of genetic material between homologous chromosomes occurs during meiosis and contributes to genetic variability

  6. Let’s Review • Replication = copying DNA • DNA  Proteins  Traits • If the DNA is “wrong” it can make the wrong proteins which will code for the wrong traits.

  7. Mutations of DNA = occurs during Replication of DNA or Cell Division

  8. MUTATIONS DURING REPLICATION • Mutations in DNA will cause a change in Protein. • A change in the protein will cause a change in Traits. ex: hair color, eye color

  9. There are different types of mutations: • Substitution • Insertion (sometimes repeated) • Deletion/omission

  10. Example of Substitution • The/car/hit/the/cat • Substitute a p or the r • The/cap/hit/the/cat

  11. Example of Insertion • The/car/hit/the/cat • Insert a letter • The/aca/rhi/tth/eca/t

  12. Example of Deletion • The/car/hit/the/cat • Delete a letter • The/cah/itt/hec/at

  13. These mutations cause: • harm: Change in the protein • benefit: Change in the protein • no effect: No change in the protein

  14. MUTATIONS DURING CELL DIVISION • During Mitosis – mutations will effect body cells • During Meiosis – mutations have the potential to be passed on to offspring

  15. Let’s Practice • Original strands: A C T C T G A G • After Replication: A C T C T G A G A What type of mutation is this?

  16. Original strands: A C T C T G A G • After Replication: A C T C T G A T What type of mutation is this?

  17. Original strands: A C T C T G A G • After Replication: A C T C T G A G T What type of mutation is this?

  18. Overall, the organism is either harmed, benefits or has no effect from a DNA mutation.

  19. Mutation Worksheet

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