BIOLOGYEvolution

L. R. InglishCanyon H. S.

G-101

Chapter 15.1: Darwin’s Theory of Evolution

Chapter 15

EVOLUTION

1. Roll

2.PPT Introduction to Diversity

3.Triple Write:

Why do you look the way you look?

4.WORKBOOKS: Pull page 167 – 170

a. Summary page 167 – 168Choose most important sentence in each paragraph

b. Section 15-1: page 169 – 170The Puzzle of Life’s Diversity

3/14 TODAY…

TRIPLE WRITE

CORNELL NOTES

WORKBOOKS

Chapter 15Darwin’s Theory

CHAPTER 15Section 1

The Puzzle of Life's DiversityDIVERSITY

WHY IS THERE SUCH DIVERSITY?

• There are millions of environment.• Each species fits its home perfectly.

• Each species has adapted to its niche.

WHY?

ADAPTATION ALLOWS ORGANISM TO LIVE LONGER.

ADAPTATION ALLOWS ORGANISM TO HAVE MORE OFFSPRING.

ADAPTATION ALLOWS ORGANISM TO HAVE MORE OFFSPRING

PER BIRTH.

MUTATION OCCURS

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 LECTUREP1,

Duck billed Platypus 2:30

Homologous structures

Whale video 1:20Sperm Whales 2:30

Jurassic Park youtube 3:30Symphony of Science: Dinosaurs

JP BiologyJP Cloning Video 3:30JP Cloning Real Story

END OF LECTUREP1,

Portfolio #9DUE

TODAY

IS THIS THE INSIDE OF

YOUR BRAIN

1. Roll

2.PPT Introduction to Diversity

3.Triple Write:

Why is there so much Diversity in Life?

4.WORKBOOKS: Pull page 167 – 170

a. Summary page 167 – 168Choose most important sentence in each paragraph

b. Section 15-1: page 169 – 170The Puzzle of Life’s Diversity

3/18 TODAY…

TRIPLE WRITE

CORNELL NOTES

WORKBOOKS

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.

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.

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.

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 the

theory of evolution.

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.

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?

DOMED SHELLSADDLE SHELL

Cinci Zoo

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. change over time.b. are not related to fossil remains.c. do not vary from one location to another.d. remain unchanged when the environment

changes.

– Darwin hypothesized that different-looking mockingbirds from different islands might be descendants of birds thata. 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

1.Roll2.Homework Review3.DAILY QUIZ

Review Chapter 12 Test

4.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

6.Tonight’s Homework Workbook Summary page 143 – 144

• Read each paragraph and highlight the MOST IMPORTANT sentence.

3/4 TODAY…POWERPOINT NOTES

SCANTRONS

WORKBOOKS

3/4/13 DAILY QUIZ A codon is

a. a sequence of three bases b. found in mRNAc. Found in tRNAd. translated from DNA by the mRNAe. translated from the mRNA by the tRNA

An anticodon isa. a sequence of three bases b. attached to mRNAc. attached to a tRNAd. translated from DNA by the mRNAe. translated from the mRNA by the tRNA

A codon is found witha. mRNAb. tRNAc. ribosomesd. amino acidse. proteins

a. An anticodon is found with– mRNA– tRNA– ribosomes– amino acids– proteins

3/4/13 DAILY QUIZ The DNA bases area. codonsb. guaninec. adenined. cytosinee. thymine

The RNA bases area. codonsb. guaninec. adenined. cytosinee. 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