BIOLOGY Evolution Chapter 15 1 Darwins Theory of

BIOLOGY Evolution Chapter 15. 1: Darwin’s Theory of Evolution L. R. Inglish Canyon H. S. G-101

Chapte r 15 EVOLUTION

3/14 TODAY… 1. Roll 2. PPT Introduction to Diversity CORNELL NOTES 3. Triple Write: TRIPLE WRITE WORKBOOKS Why do you look the way you look? 4. WORKBOOKS: Pull page 167 – 170 a. Summary page 167 – 168 Choose most important sentence in each paragraph b. Section 15 -1: page 169 – 170 The Puzzle of Life’s Diversity

Chapter 15 Darwin’s Theory

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

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

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

MUTATION OCCURS FAVORED BY ENVIRONMENT MORE OFFSPRING

WHY? MUTATION OCCURS FAVORED BY ENVIRONMENT MORE OFFSPRING

MUTATION OCCURS FAVORED BY ENVIRONMENT MORE OFFSPRING

WHY NOT? ? ? MUTATION OCCURS NOT FAVORED BY ENVIRONMENT LESS OFFSPRING

WHY NOT? ? ? MUTATION OCCURS NOT FAVORED BY ENVIRONMENT LESS OFFSPRING

WHY? MUTATION OCCURS FAVORED BY ENVIRONMENT MORE OFFSPRING

WHY ? ? ? WHY NOT? ? ?

END OF LECTURE P 1,

Duck billed Platypus 2: 30

Homologous structures

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

END OF LECTURE P 1,

Portfoli o #9 DUE TODAY

IS THE INSIDE OF YOUR BRAIN

3/18 TODAY… 1. Roll 2. PPT Introduction to Diversity CORNELL NOTES 3. Triple Write: TRIPLE WRITE WORKBOOKS Why is there so much Diversity in Life? 4. WORKBOOKS: Pull page 167 – 170 a. Summary page 167 – 168 Choose most important sentence in each paragraph b. Section 15 -1: page 169 – 170 The Puzzle of Life’s Diversity

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

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.

Voyage of the Beagle

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 theory of evolution.

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.

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.

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.

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?

Cinci Zoo DOMED SHELL SADDLE SHELL

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

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.

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

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

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

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

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

END OF SECTION

3/4 TODAY… 1. Roll 2. Homework Review 3. DAILY QUIZ POWERPOINT NOTES SCANTRONS WORKBOOKS ü Review Chapter 12 Test 4. PORTFOLIO #7 DUE ü Pick up you Portfolio #7 Cover Sheet 5. WORKBOOK ü Pull Workbook sheets page 143 – 154 ü Bring to class everyday until in Portfolio 6. Tonight’s Homework ü Workbook Summary page 143 – 144 • Read each paragraph and highlight the MOST IMPORTANT sentence.

3/4/13 DAILY QUIZ § A codon is § An anticodon is § A codon is found with a. b. c. d. e. a sequence of three bases found in m. RNA Found in t. RNA translated from DNA by the m. RNA translated from the m. RNA by the t. RNA a. b. c. d. e. a sequence of three bases attached to m. RNA attached to a t. RNA translated from DNA by the m. RNA translated from the m. RNA by the t. RNA a. b. c. d. e. m. RNA t. RNA ribosomes amino acids proteins a. An anticodon is found with

§ The DNA bases are a. b. c. d. e. codons guanine adenine cytosine thymine 3/4/13 DAILY QUIZ § The RNA bases are ANTICODONS a. codons b. guanine c. adenine d. cytosine e. URACIL 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.