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Daily Agenda

Daily Agenda. Ms. DeSalvo October 29, 2013. BIO Bell Ringer 10/29/13 Activity: I’m so alone. Define the word “isolated” and use it in a sentence. Definition: Sentence:. Biology (Period 2,3,4) October 29, 2013. Last Class (See me for missed work) Modeling Natural Selection

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Daily Agenda

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  1. Daily Agenda Ms. DeSalvo October 29, 2013

  2. BIO Bell Ringer 10/29/13Activity: I’m so alone. • Define the word “isolated” and use it in a sentence. • Definition: • Sentence:

  3. Biology (Period 2,3,4)October 29, 2013 Last Class (See me for missed work) • Modeling Natural Selection • Type speech after all 3 drafts have been checked in. • Hand in typed speech with all three paragraph drafts and lab sheets attached! Today • Modeling Natural Selection • Sneakiest Cricket! • Speciation Notes • You need to take notes by hand today! They will not be posted. • Homework: “Fitness” Reading and Carnegie Notes

  4. Speciation 4

  5. What IS a species? • We can’t define a species by looks alone! If we defined a species as looking similar, these would ALL be two separate species!

  6. Cannot Reproduce (sterile) Cannot Reproduce (sterile) Cannot Reproduce (sterile) The offspring have to be fertile or it doesn’t count!! What is a species? • We can’t define a species by just producing offspring, either! Mule Liger “Beefalo”

  7. What IS a species? • A species is: • A group of interbreeding populations • Reproductively isolated(kept apart) from other such groups • Organisms must be able to mate and produce fertile offspring • (This is why mules, ligers, and beefalo aren’t new species! No fertile offspring!)

  8. Gene Pool • When you can mate and produce fertile offspring, you are in the same gene pool! Because they can mate and produce a fertile puppy, the Beagle and Pug share a gene pool!

  9. How speciation happens • Reproductive isolation: when members of two populations cannot mate and produce fertile offspring • Isolation • Behavioral • Geographic • Temporal 13

  10. Behavioral isolation Western Meadowlark Eastern Meadowlark Sounds similar, but different enough to keep them separate • Two species could interbreed but have different courtship rituals • Example: Different bird songs 14

  11. Temporal (Time) isolation • Species reproduce at different times • Not seen in humans, more in other species • Some animals have periods where they are in “heat” • Animals that reproduce at different times of the year might as well be separated by a geographic barrier 15

  12. Geographic isolation • Rivers, mountains, etc… keep populations apart • Separates into two separate gene pools • Many “abiotic” factors • Abiotic = not living 16

  13. Alpheidae (Snapping Shrimp) around Panama Panama Canal Gene pools have been separated!! • What does this mean? • Isthmus of Panama formed ~3MYA • 7 Species of shrimp split into 14 species! = closest relative

  14. Speciation Summary • A population is separated by some type of barrier • Behavioral, temporal (time), or geographic • Each population adapts and evolves to its own environment • Changes and differences build up until the organisms cannotor will not produce fertile offspring with each other

  15. Lake Malawi Speciation & Evolution.avi Summary • Founders arrive • Separation • (Geographic, behavioral, temporal) • Changes in gene pool • Reproductive Isolation 20

  16. New Species “Tree” Original Species “Tree” Isthmus of Panama formed

  17. CPS Bell Ringer 10/29/13Activity: Free Fall Formulas! List the 3 Formulas to calculate free fall. • How Far: • How Long: • How Fast:

  18. CPS (Period 6,8)October 29, 2013 Last Class (See me for missed work) • Gravity Notes & Practice Problems • Free Fall/Gravity Problems are HOMEWORK! Be prepared for a HW check off grade and to white board the problems tomorrow! • Per. 6: Turn in completed Free Fall Lab. (Was assigned as HW and must be turned in. Labs not turned in will be late are automatically docked 25% for one day, 50% for two days and will not be accepted for credit but should be completed for your own use on quizzes and tests.) Today • Free Fall Gravity White Board. • Get into the assigned PODS to WB your problems. • Non-constant Motion Notes

  19. WB Pods 6th Period Pod 1: Aarin, Ricky, Nathan, Dmitri Pod 2: Alexis, Sam, Michael, Jeremy Pod 3: Erika, Dan, Chad, Alexis Pod 6: Kaley, Angel, Lana, Vanessa Pod 7: Ethan, Quad, Jay 8th Period Pod 1: Danielle, Haley, Taylor, Allyson Pod 2: Nick, Jordan, Jordan Pod 3: Eliel, Melanie Ruiz, Jackie, Israel Pod 4:Cassie, Elena, Darren, Raven Pod 5: Jason, Jailene, Melanie Randa, Anthony Pod 6: Jumique, Justin, Gio, Jose Pod 7: Alex, Lizzie, Alli, Austin

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