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“Nothing in biology makes sense except in the light of evolution.” - T. Dozhansky

“Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

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Page 1: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

“Nothing in biology makes sense except in the lightof evolution.”

- T. Dozhansky

Page 2: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Greek Gods

Page 3: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Norse Gods

Page 4: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Raelian leader says cloning first step to immortality

Saturday, December 28, 2002 Posted: 2:08 AM EST (0708 GMT)

MIAMI, Florida (CNN) -- The leader of a religious sect that claimed to have created the first human clone Friday called the development "just the first step" toward human immortality through cloning.

Former French journalist Claude Vorilhon, who now calls himself Rael, claims to be a direct descendant of extraterrestrials who created human life on Earth through genetic engineering. A company founded by his followers announced Friday that the first human clone has been born -- a 7-pound baby girl dubbed "Eve."

Page 5: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Raëlians on the origin of life

www.rael.org

Page 6: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Life Humans

naturalselection God space aliens

? ?

Origin hypotheses

Page 7: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Life

Humans

naturalselection

Godspace aliens

mainstream biology

Page 8: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Life

Humans

God

space aliens

universe

Genesis God

naturalselection

Page 9: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Life on earth Humans

space aliens

God

naturalselection

Raëlian hypothesis

Page 10: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Life

Humans

naturalselection

God

space aliens

universe naturalselection

the materialist hypothesis

Page 11: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Life

Humans

God

space aliens

universe

naturalselection

Distant creator God

Page 12: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Life

Humans

naturalselection

God

space aliens

universe

naturalselection

Watchmaker God

Page 13: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Life Humans

God

space aliens

naturalselection

Other hypotheses?

Page 14: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Rael: No DNA test for baby Eve Sect leader vows to guard identity of alleged human

clone

Friday, January 3, 2003 Posted: 11:05 AM EST (1605 GMT)

SHERBROOKE, Quebec (CNN) -- A company founded by members of a sect that believes mankind was created by extraterrestrials says what it calls the first human clone will not undergo testing to verify her genetic makeup.

The head of the Raelian movement, who calls himself "Rael," said Thursday that he has told Clonaid's leader not to perform DNA tests on the infant girl, nicknamed "Eve."

Page 15: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Raelian cloners 'have two staff and no lab'

[WASHINGTON] Clonaid, the company that announced last December that it had cloned a human, seems to have no lab space and only two employees, according to court documents obtained by the Boston Globe.

Clonaid was founded by a religious sect known as the Raelians, who believe that the human race was cloned from aliens. The company's managing director, Raelian bishop Brigitte Boisselier, has said that so far a dozen clients have each paid $25,000 or more for the group's cloning services.

Nature 423, 8 (01 May 2003); doi:10.1038/423008a

Page 16: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

What do you think?

Do you think the Raëlians cloned a human?

Did space aliens create all life on earth?

Page 17: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

How do you know?

Page 18: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

How do you know?

• Because you’ve seen it yourself.• Because someone you trust told you.• Because it makes logical sense.

Page 19: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Why do you believe someone?

• They are a relative.• They have moral or religious authority.• They are scientists.• They offer verifiable evidence in favor of

their for their idea.• They offer verifiable evidence against

alternative ideas.

Page 20: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Why do you believe someone?

• They are a relative.• They have moral or religious authority.• They are scientists.• They offer verifiable evidence in favor of

their for their idea.• They offer verifiable evidence against

alternative ideas.

That’s science

Page 21: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Scientific hypotheses

Hypothesis: a potential explanation for some observation orphenomenon.

Scientific hypothesis: a hypothesis that could be rejectedby some conceivable observation.

Useful scientific hypothesis: a hypothesis that can berejected by some conceivable observation RIGHT NOW.

Page 22: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Text, Fig. 1.19

Page 23: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Limits to science

Many interesting hypotheses are not necessarily verifiable:

• What does pain feel like?• Did space aliens take Raël to another planet?• Did God create humans?

Not everything that is true is subject to scientific confirmation.

Page 24: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

OUTLINE 20I. The Concept of Evolution up to Darwin’s Time

A. Greek PhilosophyB. Christian TheologyC. The Enlightenment

II. Evolution Before DarwinA. LamarckB. State of knowledge at Darwin’s time

III. Darwin and the theory of Evolution By Natural SelectionA. Voyage of the BeagleB. Formulation of the theory

IV. The TheoryA. Essential elementsB. Contrast with views of the time

V. Darwin’s EvidenceA. Artificial selectionB. The fossil recordC. Comparative anatomyD. EmbryologyE. Biogeography

Page 25: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Greek Philosophy

Essentialism

Page 26: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Modern remnants of the great chain of being

Page 27: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself
Page 28: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Surprising things about this discovery

Homo floresiensis in the context of the evolution and dispersal of the genus Homo. a, The new species as part of the Asian dispersals of the descendants of H. ergaster and H. erectus, with an outline of the descent of other Homo species provided for context. b, The evolutionary history of Homo is becoming increasingly complex as new species are discovered. Homo floresiensis (left) is believed1 to be a long-term, isolated descendant of Javanese H. erectus, but it could be a recent divergence. 1, H. ergaster/African erectus; 2, georgicus; 3, Javanese and Chinese erectus; 4, antecessor; 5, cepranensis; 6, heidelbergensis; 7, helmei; 8, neanderthalensis; 9, sapiens; 10, floresiensis. Solid lines show probable evolutionary relationships; dashed lines, possible alternatives. Nature 431:1043.

Page 29: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

James Hutton1726 - 1797

Gradualism Natural laws are invariant. Change results from the accumulation of slow continuous processes.

Page 30: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself
Page 31: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Charles Lyell1797 - 1875

Uniformitarianism the rate of geological activity on Earth is constant.

Page 32: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Similarity among the limb bones of organisms that use them for different purposes – Buffon 1760

Page 33: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Jean-Baptiste de Lamarck1744 - 1829

. . . time and favorable conditions are the two principal means which nature has employed in giving existence to all her productions. We know that for her time has no limit, and that consequently she always has it at her disposal.

Page 34: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself
Page 35: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Charles Darwin1809-1882

Page 36: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Voyage of the HMS Beagle

Page 37: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Thomas Malthus1766 - 1834

Populations can increase faster than their resources

Page 38: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Alfred R. Wallace1823 - 1913

Page 39: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself
Page 40: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Parent Offspring Parent

More offspring are born than can survive to reproduce

Page 41: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Individuals within a species vary

Page 42: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Parent Offspring

Traits are heritable

Parent Offspring

Page 43: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Parent Offspring

Individuals with some traits reproduce more than others

Parent Offspring

Page 44: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Traits that enhance reproduction become more common each generation

parentsgeneration

1

offspringgeneration

1

parentsgeneration

2

offspringgeneration

2

Page 45: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Artificial selection has produced different, true- breeding varieties of “fancy” pigeons from a single ancestral form

Page 46: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself
Page 47: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Fossils - preserved evidence of previously living things

Page 48: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Fig 22.17 A fossil whale with hind legs

Page 49: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Homology - similarity caused by common ancestry

Page 50: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Early embryos of diverse groups share many features. As development proceeds, embryonic forms diverge and become more similar to adults of their own species (von Baer’s law)

Evidence for evolution from comparative embryology

Page 51: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Finches of the Galapagos Islands

Page 52: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself
Page 53: “Nothing in biology makes sense except in the light of evolution.”levitan/BSC2011/Levitan bio2... · 2008. 3. 19. · Former French journalist Claude Vorilhon, who now calls himself

Molecular evidence