BIOLOGY Evolution

1. BIOLOGYEvolution Chapter 15.1: Darwin’s Theory of Evolution L. R. Inglish Canyon H. S. G-101

2. Chapter 15 EVOLUTION

3. 3/14 TODAY… CORNELL NOTES TRIPLE WRITE WORKBOOKS Roll PPT Introduction to Diversity Triple Write: Why do you look the way you look? WORKBOOKS: Pull page 167 – 170 Summary page 167 – 168 Choose most important sentence in each paragraph Section 15-1: page 169 – 170 The Puzzle of Life’s Diversity

4. Chapter 15 Darwin’s Theory

5. CHAPTER 15Section 1The Puzzle of Life's Diversity DIVERSITY

6. WHY IS THERE SUCH DIVERSITY? • There are millions of environment. • Each species fits its home perfectly. • Each species has adapted to its niche.

7. WHY? MUTATION OCCURS FAVORED BY ENVIRONMENT MORE OFFSPRING • ADAPTATION ALLOWS ORGANISM TO LIVE LONGER. • ADAPTATION ALLOWS ORGANISM TO HAVE MORE OFFSPRING. • ADAPTATION ALLOWS ORGANISM TO HAVE MORE OFFSPRING PER BIRTH.

8. MUTATION OCCURS FAVORED BY ENVIRONMENT MORE OFFSPRING

10. WHY? MUTATION OCCURS FAVORED BY ENVIRONMENT MORE OFFSPRING

11. MUTATION OCCURS FAVORED BY ENVIRONMENT MORE OFFSPRING

12. WHY NOT??? MUTATION OCCURS NOTFAVORED BY ENVIRONMENT LESS OFFSPRING

13. WHY NOT??? MUTATION OCCURS NOTFAVORED BY ENVIRONMENT LESS OFFSPRING

14. WHY? MUTATION OCCURS FAVORED BY ENVIRONMENT MORE OFFSPRING

15. WHY ??? WHY NOT???

16. END OF LECTUREP1,

18. Duck billed Platypus 2:30

20. Homologous structures

22. Whale video 1:20 Sperm Whales 2:30 Jurassic Park youtube 3:30 Symphony of Science: Dinosaurs JP Biology JP Cloning Video 3:30 JP Cloning Real Story

23. END OF LECTUREP1,

24. Portfolio #9 DUE TODAY

25. IS THIS THE INSIDE OF YOUR BRAIN

26. 3/18 TODAY… CORNELL NOTES TRIPLE WRITE WORKBOOKS Roll PPT Introduction to Diversity Triple Write: Why is there so much Diversity in Life? WORKBOOKS: Pull page 167 – 170 Summary page 167 – 168 Choose most important sentence in each paragraph Section 15-1: page 169 – 170 The Puzzle of Life’s Diversity

27. The Puzzle of Life's Diversity • Evolution is the process by which modern organisms have descended from ancient organisms. • A scientifictheory is a well-supported testableexplanation of phenomena that have occurred in the natural world. • Process: Several steps that lead to change. • The step-by-step process of following a recipe usually ends up with a flavor able desert to share with you friends. • Descended: When certain organisms share a common ancestry or “family history”. • All of the McGregors in the world can be traced back to the Clan McGregor that settled in the Scotland 950 years ago.

28. Voyage of the Beagle • Voyage of the Beagle • In 1831, Darwin set sail from England aboard the H.M.S. Beagle for a voyage around the world. • Darwin went ashore and collected plant and animal specimens for his collection. • He studied the specimens, read the latest scientific books, and filled many notebooks with his observations and thoughts.

29. Voyage of the Beagle

30. Voyage of the Beagle • What was Charles Darwin's contribution to science? • During his travels, Darwin made numerous observations and collected evidence that led him to propose a hypothesis about the way life changes over time. • That hypothesis has become the theory of evolution.

31. Darwin's Observations • Darwin's Observations • Darwin observed that many plants and animals were well-suited to the environments they inhabited. • He was impressed by the ways in which organisms survived and produced offspring.

32. Darwin's Observations • Darwin was puzzled by where different species lived and did not live. • Grasslands in some regions were similar to one another but were inhabited by very different animals.

33. Darwin's Observations • Living Organisms and Fossils  • Darwin collected the preserved remains of ancient organisms, called fossils. • Some of those fossils resembled organisms that were still alive. • Others looked completely unlike any creature he had ever seen.

34. Darwin's Observations • The Galápagos Islands • Darwin observed that the Galápagos Islands were close together but had very different climates. • What pattern did Darwin observe among organisms of the Galápagos Islands?

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36. The Journey Home • Darwin observed that the characteristics of many animals and plants varied noticeably among the different islands of the Galápagos.

37. The Journey Home • Darwin wondered if animals living on different islands had once been members of the same species. • These separate species would have evolved from an original South American ancestor species. • Darwin observed that the characteristics of many animals and plants varied noticeably among the different islands of the Galápagos.

38. Darwin's observations in the Galápagos Islands included all of the following EXCEPT • characteristics of many living organisms did not vary among the different Galápagos Islands. • many plants and animals were well suited to their environments. • very different animals inhabited many similar ecosystems. • though close together, the islands had very different climates.

39. What did Darwin learn about the tortoises of the Galápagos Islands? • Tortoises with dome-shaped shells were found on all of the islands. • The tortoises resembled fossil remains that were found on the islands. • The shape of the Galápagos tortoise shells varied with their different habitats. • Different shaped tortoise shells occupied the same habitats.

40. According to Darwin's proposed theory of evolution, species of organisms • change over time. • are not related to fossil remains. • do not vary from one location to another. • remain unchanged when the environment changes.

41. Darwin hypothesized that different-looking mockingbirds from different islands might be descendants of birds that • belonged to a single species that had originated on the islands. • belonged to a single species from the South American mainland. • belonged to a different species from similar habitats in South America. • had been brought to the islands by earlier visitors.

42. What role did the evidence gathered by Darwin play in developing his ideas? • It immediately gave him the idea that organisms evolved. • It confirmed evolution—an idea he had before he left England. • It confirmed evolution, which he proved on his arrival in the Galápagos. • It led to considering the possibility of evolution only after he was heading home.

43. END OF SECTION

44. 3/4 TODAY… POWERPOINT NOTES SCANTRONS WORKBOOKS Roll Homework Review DAILY QUIZ Review Chapter 12 Test PORTFOLIO #7 DUE Pick up you Portfolio #7 Cover Sheet 5. WORKBOOK Pull Workbook sheets page 143 – 154 Bring to class everyday until in Portfolio Tonight’s Homework Workbook Summary page 143 – 144 Read each paragraph and highlight the MOST IMPORTANT sentence.

49. 3/4/13 DAILY QUIZ • A codon is • a sequence of three bases • found in mRNA • Found in tRNA • translated from DNA by the mRNA • translated from the mRNA by the tRNA • An anticodon is • a sequence of three bases • attached to mRNA • attached to a tRNA • translated from DNA by the mRNA • translated from the mRNA by the tRNA • A codon is found with • mRNA • tRNA • ribosomes • amino acids • proteins • An anticodon is found with • mRNA • tRNA • ribosomes • amino acids • proteins

50. 3/4/13 DAILY QUIZ • The DNA bases are • codons • guanine • adenine • cytosine • thymine • The RNA bases are • codons • guanine • adenine • cytosine • thymine TRUE / FALSE • The whole purpose of a DNA code is to tell the cell how to manufacture proteins. • The whole purpose of a DNA code is to tell the cell how to string together amino acids to produce one protein. • The whole purpose of RNA is to get the DNA information out of the nucleus into the cytoplasm where the amino acids can be strung together to make specific proteins. ANTICODONS URACIL