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For evolution by natural selection to happen, there must be:

Jan. 21st 2014. DO NOW:. Copy the notes below into your notebook on the next available page:. For evolution by natural selection to happen, there must be:. 1. Variation. 2. Heritable Traits. 3. Natural Selection. Notes cont’d:. Copy the definition below into your glossary.

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For evolution by natural selection to happen, there must be:

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  1. Jan. 21st 2014 DO NOW: Copy the notes below into your notebook on the next available page: For evolution by natural selection to happen, there must be: 1. Variation 2. Heritable Traits 3. Natural Selection

  2. Notes cont’d: Copy the definition below into your glossary Natural Selection: organisms that are better adapted to their environment are more likely to survive and reproduce; the environment “chooses” who lives and who dies.

  3. Video NOVA: What Darwin Never Knew

  4. 2 Column Notes -You will read GALAPAGOS FINCHES: Famous Beaks -In your notebook on page , you will complete 2-column notes as outlined in the reading. -CLASS SET ALERT!!! DO NOT WRITE on the Article

  5. Jan. 22& 23 DO-NOW On your Do Now Sheet, match the vocabulary word to the correct example.. 1. Adaptation 2. Population 3. Variation Picture A Picture B Picture C

  6. Engage When the Galápagos were first formed, there were no plants or animals on the islands. In your comp book, write about some ways that plants and animals from South America could have found their way to these rocky islands. Be prepared to share!

  7. Galapagos Islands

  8. DO NOW Tape in Handouts onto next two pages in composition book, and add Title. Investigation: Finch Beaks Investigation: Finch Beaks Pg 17 Pg 16

  9. Investigation: Finch Beaks Expectations: Backpacks under desk Read directions carefully and complete the investigation Most questions will be answered using Qwizdom remote system Stay at your table; do not wonder around the room. Return materials exactly as you found them Handle materials carefully to avoid accidents

  10. Investigation: Finch Beaks Part 1: Measuring Beak Variation Using the ruler, measure the depth of 6 different finch beaks in centimeters (cm)

  11. Investigation: Finch Beaks Part 1: Measuring Beak Variation 2. Convert measurements into millimeters (mm) by multiplying by 10

  12. Investigation: Finch Beaks Part 1: Measuring Beak Variation 3. Convert to real beak depth by multiplying by 10

  13. Investigation: Finch Beaks Part 1: Measuring Beak Variation • Questions: • 1) What was the size of the largest real beak? • A) 8.5 mm B) 9.8 mm C) 10.9 mm D) 11.5 mm • 2) What was the size of the smallest real beak? • A) 7.8 mm B) 6.8 mm C) 8.9 mm D) 8.5 mm • 3) Do you think this small variation in beak size could affect a finch’s survival? • Yes No

  14. Investigation: Finch Beaks Part 2: Battle of the Beaks 1. Use the ruler to measure and record the depth of the small and large beaks

  15. Investigation: Finch Beaks Part 2: Battle of the Beaks • Slowly poor the small and large seeds on the island (paper Plate) • Predict which beak will be better at picking up seeds during a normal year

  16. Investigation: Finch Beaks Part 2: Battle of the Beaks One person will have the small beak, the other the large beak. You will have 30 seconds to pick up as many seeds as possible and place them in your stomach

  17. Investigation: Finch Beaks Part 2: Battle of the Beaks Count the number of small and large seeds and record your data for trial 1.

  18. Investigation: Finch Beaks Part 2: Battle of the Beaks Repeat and collect data for trial 2.

  19. Investigation: Finch Beaks Part 2: Battle of the Beaks • Place 3 small seeds and all the large seeds on the island for the • Predict which beak will be better at picking up seeds during a Drought year

  20. Investigation: Finch Beaks Part 2: Battle of the Beaks One person will have the small beak, the other the large beak. You will have 30 seconds to pick up as many seeds as possible and place them in your stomach

  21. Investigation: Finch Beaks Part 2: Battle of the Beaks 11. Count the number of small and large seeds and record your data for trial 1.

  22. Investigation: Finch Beaks Part 2: Battle of the Beaks 12. Repeat and collect data for trial 2.

  23. Investigation: Finch Beaks Part 2: Battle of the Beaks • Questions: • 4) Which beak size was more successful during a normal year? • A) Small B) Large C) Both did well • 5) Which beak size was more successful during a drought year? • A) Small B) Large C) Both did well

  24. Investigation: Finch Beaks Part 2: Battle of the Beaks • Questions: • 6) How did a change in the environment affect which beak size collected more food? • The drought left mostly large seeds, which could only be picked up by the small beak • The change in the environment did not affect which beak could pick up more seeds • The drought left mostly small seeds, which could only be picked up by the small beak • The drought left mostly large seeds, which could only be picked up by the large beak

  25. Investigation: Finch Beaks Part 2: Battle of the Beaks • Questions: • 7) Based on the theory of natural selection, how should the population of medium ground finches change during a drought year? • The population will decrease and those that survive will have small beak • The population will increase and beak variation will also increase • The population will decrease and those that survive will have large beaks • The population will most likely go extinct

  26. Investigation: Finch Beaks Part 3: Survival on Daphne Major Island 2. Graph the seed data onto the seed abundance graph.

  27. Investigation: Finch Beaks Part 3: Survival on Daphne Major Island 3. Graph the finch data onto the Finch Population Graph.

  28. Investigation: Finch Beaks Part 3: Survival on Daphne Major Island • Questions: • 8) During what month and year was the seed abundance the highest? • A) January 1977 B) July 1976 C) January 1976 D) July 1978 • 9) During what month and year was the seed abundance the lowest? • A) January 1978 B) July 1977 C) January 1977 D) July 1978 • 10) During what month and year was the finch population the highest? • A) January 1977 B) July 1976 C) January 1976 D) July 1978 • 11) During what month and year was the finch population the lowest? • A) January 1978 B) July 1977 C) January 1977 D) July 1978

  29. Investigation: Finch Beaks Part 3: Survival on Daphne Major Island • Questions: • 12) What is the relationship between the finch population and seed abundance? • When more seeds are abundant, there are more finches • When more seeds are abundant, there are less finches • When less seeds are abundant, there are more small beaked finches • When less seeds are abundant, there are more finches

  30. Investigation: Finch Beaks Part 3: Survival on Daphne Major Island • Questions: • 13) When they measured the drought survivors, they found that most were finches with big beaks. Why do you think bigger-beaked birds survived better than the smaller-beaked birds? • Small-beaked finches moved to a different part of the island • Bigger-beaked finches could eat the tougher seeds, while the small-beaked finches starved • Small-beaked finches could find water as easily as large-beaked finches.

  31. DO NOW

  32. Adaptive Advantages • Complete the handout on your own first. • Once completed, compare and discuss your answers with a partner.

  33. Planet Earth • We will watch 4 clips • As you watch the clips fill in the information on your sheet including: -Species -Environment -Adaptations • After the clip, compare your information with your group.

  34. Planet Earth • Once the clip is over, you will be given an environmental change. • Determine which species is most likely to survive, and what adaptations must occur in that species to ensure its survival. • Fill in your explanation on your sheet, and prepare to present, as a group, your predictions.

  35. The Arctic • Polar bears 1 • Polar Bears 2

  36. The Arctic • Environmental change: • Global warming has cause all of the arctic ice to melt leaving open ocean where there was once hard ice to walk and hunt on.

  37. African Desert • Elephant vs. Lion

  38. African Desert • Environmental Change: • Weather patterns begin to change resulting in large amounts of rain year round.

  39. Deciduous Forest • Wasps

  40. Deciduous Forest • Environmental Change Drought causes the trees to produce far less acorns, and the ones that are produced are half the size.

  41. Antarctic • Fur Seals and Penguins

  42. Antarctic • Environmental Change: There is no change. Discuss what adaptations could occur if the environment stays the same.

  43. Presentation Expectations • Presenters: • Speak clearly and loudly • Audience -Listen Quietly -Decide whether you agree or disagree -When presentation is over, you may be called upon to share your thoughts

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