1. Evolution Today’s topic: Welcome to Biology! What is Evolution?
Why Human and Monkeys are different?
Who is Charles Darwin?
Can Fossil tell the history of lives?
What is Natural selection? ……
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2. How to use this Online Course?
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3. Charles Darwin and Evolution Theory
Warm-ups
Content
Quizzes
Homework
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4. What do you think of Evolution?
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5. Our Earth is 4,6 Billion years old
Our Earth is 4,6 Billion years old. So there have been a LOT things going on since then….
Geological Time Diagram
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6. Charles Darwin Aged 25yrs
He born in Shrewsbury, Shropshire, England on Feb 12, 1809.
He is the youngest kid of wealthy doctor family with 4 sisters and 1 brother.
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Aged 7yrs
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7. Significance November 24th, 1859
Charles Darwin wrote this book- Origin of Species after he cam back from his voyage on the Beagle
Significance
This book introduced the scientific theory that populations evolve over generations through natural selection.
It presented a body of evidence that the diversity of life arose by common descent through a branching pattern of evolution.
November 24th, 1859
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8. Natural Selection
Individuals with favorable traits are more likely to leave more offspring better suited for their environment.
Also known as “Survival the fittest”
Examples: The evolution of Giraffes
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9. Natural selection – the survival of the “fittest.”
How long necks evolved in giraffes?
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What would happen to the giraffes with shorter necks?
Survive and make off springs
Die before leave off springs
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10. Natural selection – the survival of the “fittest.”
Why might the brown beetles have survived?
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11. Common Descent
A common Descent is the trait that are shared by 2 or more evolved species.
ORGANISMS WHO SHARE COMMON DESCENT INDICATE THAT THEY HAVE A COMMON ANCESTOR.
There is strong evidence that all living organisms on Earth are descended from ONE common ancestor.
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12. Evolution
A developmental process: the natural or artificially induced process by which new and different organisms develop as a result of changes in genetic material.
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13. Macroevolution Microevolution
&
Microevolution
Microevolution: small adaptations within one specie that evolved from one traits from their common ancestor. (able to interbreed)
Macroevolution: Accumulative genetic changes that create a new specie which is unable to interbreed with the former specie.
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14. Voyage On Beagle
Darwin set sail on the H.M.S. Beagle ( ) to survey the south seas (mainly South America and the Galapagos Islands) to collect plants and animals.
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15. Galapagos Islands
Charles Darwin did most of his research in this tropical Island.
He did a thorough examination on:
Tortoise
Finches
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16. Can you spot the difference?
What might they have been used for?
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17. Evidence of Evolution 1. Biogeography:
Geographical distribution of species.
(Example: Birds live in different islands now are having specific features that best fit with the Environment of that island)
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18. Evidence of Evolution
2. Fossils and the order in which they appear in layers of sedimentary rock (strongest evidence).
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19. Fossils are the recorder as well as part of the History.
In the Picture showing here, we can put species in an order depends on the depths of their fossils.
That helped scientists to collect evidence of the relations between different species.
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20. Evidence of Evolution 3. Taxonomy: Classification of life forms.
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21. Evidence of Evolution 4.Homologous structures:
Structures that are similar because of common ancestry (comparative anatomy)
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22. Enter the Quiz

23. Charles Darwin is the most famous British Naturalist Who published his work “Origin of lives ” in 1859 after he came back from his voyage around the world. Or

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25. The Book published by Charles Darwin in 1859 called:
“The Origin of Species”
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26. 2 species that are closely observed by Charles Darwin on the Galapagos Island are Tortoise and Giraffe Or

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28. The two species that are observed by Charles Darwin are Tortoise and Finches
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29. The type of bird which is better adapted to the environment will survive.Or

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31. According to the Evolution Theory, which states the ideas of “survival the fittest”, Birds that are better adapted to the Environment will survive and pass on their genetic information.
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32. Finches with different shapes of beaks can’t interbreed because they have evolved differently from their common ancestor. Or

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34. Finches with different shapes of beaks are still able to interbreed because their variation is still within one specie.
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35. All organisms of the same species are identical.

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37. There is no real identical things because each single organism has it’s own DNA serious that carry one the unique gene information and show’s one’s identification.
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38. There is no evidence that evolution has taken place on Earth.Or

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40. In the science field, there are nowadays many evidence indicate the process of evolution, in which, biogeography, Fossils, taxonomy, homologous structures are the most commons evidences.
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41. Fossils of the organisms died long time ago are the strongest evidence of Evolution

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43. You Are Done! Go see the Homework!
Yes. Fossils are the strongest evidence of evolution because fossil shows the order of times that different species live in the past appear and extinct.
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44. Why does each type of finch have a different beak?
HOMEWORK OF THE DAY
Why does each type of finch have a different beak?
SEED EATER
BUD EATER
LARGE INSECT
EATER
EATS BUGS FROM BARK
INSECT EATER
LEAF EATER
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45. Think through these after class
Which type of ‘seed’ can you pick the most up of using your beak?
2. Why can you pick up that ‘seed’ type?
3. Which type of ‘seeds’ can you NOT pick up at all?
4. Why can’t you pick up that ‘seed’ type?
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46. HOPE YOU ENJOY THIS COURSE!
GOOD LUCK!