Evidence of Evolution.

Slides:



Advertisements
Similar presentations
Clues About Evolution Chapter 6, Section 2.
Advertisements

Clues About Evolution 2 Clues from Fossils
Roll Assignment 1/16 Q: Look at the energy pyramid, explain what each level represents and which level has the most energy available? Explain your answer.
Evidence for Evolution
The Evidence for Evolution How good is the theory?
Clues about Evolution - Fossils
17.2 Clues About Evolution Mr. Perez. Important Vocabulary  Review vocabulary  Epoch  Sedimentary rock  Radioactive element  New Vocabulary  Embryology.
EVIDENCE OF EVOLUTION. THE FOSSIL RECORD Our best proof of the history of life on Earth Preserved remains of life buried in sediment may be preserved.
Chapter: Adaptations over Time
Darwinian Evolution Packet #57 Chapter #22. Pre-Darwin Prior to Darwin, scientist knew that fossil existed for centuries. Aristotle believed that organisms.
Chapter 13 Notes Continued Evidence of Evolution
EVIDENCE WHAT EVIDENCE DO WE HAVE TO SUPPORT THE IDEA OF EVOLUTION BY NATURAL SELECTION?
Evidence for Evolution
Evidence of Evolution.
1 UNIT 5 PART 1: EVIDENCE OF EVOLUTION Evolution is a gradual change over time. There are two kinds: –Geological – a change in the earth over time –Organic.
Evidence for Evolution  Fossil Record  Comparative Anatomy  Comparative Embryology  Genetics-DNA  Industrial Melanism.
Evidence for Evolution. I. Clues From Fossils Paleontologist are scientists who study the past by collecting and examining fossils When these organisms.
Natural Selection in Animals Activity
Evolution.
a change in a species over time
Evolution: The Evidence
a change in a species over time
a change in a species over time
Evidence for Evolution
UNIT 5 PART 1: EVIDENCE OF EVOLUTION
Lessons Divided by Standard
Classification & Evolution
Evidence for Evolution: Anatomy
Evidence for evolution in Darwin’s time came from several sources.
Happy Monday! Bellwork: Turn to a new page in your notebook
What evidence supports evolution?
Evidence for Evolution
Evolution: Change Over Time
Evolution Notes: Part 2.
Evolution Notes: Part 2.
SB5c. Explain how fossil and biochemical evidence support the theory.
Evidence of Evolution.
UNIT 5 PART 1: EVIDENCE OF EVOLUTION
Evidence for Evolution
Evidence for Evolution
Evidence of Evolution.
The following is a scientific theory.
EVOLUTION? Modern Clues Martin.
Evidence for Evolution
Evidence for Evolution
Add to table of contents:
Evolution: Change Over Time
Direct Evidence for Evolution
The Theory of Evolution—Darwinian Evolution
Evolutionary Comparisons
Evolution: Change Over Time
Evolution HAVE Evidence of Evolution
Evolution: Change Over Time
4. Vestigial Structures Vestigial structures are structures that serve no function in the present organism, BUT were useful structures in earlier ancestors.
Evidence for Evolution
Evidences of evolution
Evidence for Evolution
Evolution: Change Over Time
Evidence of Evolution.
Evidence for Evolution
Evidence for Evolution
GMAS Practice Question
Evolution: Change Over Time
Evolution WHAT IS THE THEORY OF EVOLUTION &
UNIT 5 PART 1: EVIDENCE OF EVOLUTION
Evolution Notes Evolution - process in which modern organisms have descended from ancient organisms; change in a species over time.
The following is a scientific theory.
#78 Analogous, homologous, and vestigial structures
Evidence for Evolution
Presentation transcript:

Evidence of Evolution

Evidence of Evolution 4-26-13 Key Question: What is some evidence of evolution? Initial Thoughts:

What is the science behind this theory? 1) Fossils—any remains of life from an earlier time and the most abundant evidence for evolution Sedimentary rock contains the most fossils and is formed from mud, sand, and other fine particles

How do scientists figure out how old something is? Relative dating —looking at where the rock is located. Older layers are deeper than the layers above. This method only provides an estimated age of a fossil.

How do scientists figure out how old something is? Radioactive dating —measuring how a radioactive element in the fossil (like Carbon or Uranium) has decayed. They compare the amount of stable rock to amount of radioactive element still present.

Not the same kind of dating…

Fossil Hunting on the Galapagos Fossils document how organisms changed over time, but much of the fossil record is missing or incomplete (like a book with pages ripped out)! Fossil Hunting on the Galapagos

Whales in the Making http://www.pbs.org/wgbh/evolution/library/03/4/l_034_05.html

2) Homologous Structures —body parts that are similar in origin and structure. Example: arms, dolphin fin, bat wing, bird wing

3) Vestigial Structures —a body part that is reduced in size and does not seem to have a function. Examples: human appendix, wisdom teeth and muscles that are for moving the ears.

4) Embryology —study of the development of embryos (an organism in its earliest stages of development). Examples: gills and tailbones in humans                

What similarities do you see between these embryos?

5) Biochemical & DNA Comparing DNA —the closer the DNA sequences are in organisms, the more closely related they are. Example: DNA has shown that dogs are the closest relatives of bears. Human’s closest relatives are from the ape family. Cousins?

Example: Humans are most closely related (99.9%) to chimpanzees.

Analysis Questions List the types of evidence of evolution What is 1 homologous structure found in whales and land animals? What is 1 vestigial structure found in whales?

Summary What did you think about the evidence of evolution before this lesson? What did you learn about the evidence of evolution from this lesson? (Minimum of 3 sentences!!!) What are some further thoughts or questions you have about the evidence of evolution ?

Reflection Write a short poem about whale evolution

Big Idea