foothill high school science department principles of evolution early idea’s darwin was not the...

Foothill High School Science DepartmentFoothill High School Science Department

Principles of EvolutionPrinciples of Evolution

Early Idea’sDarwin Was Not The First

Early Idea’sDarwin Was Not The First


Enquiring Minds Want To Know:Enquiring Minds Want To Know:

Did The Theory of Evolution JustDid The Theory of Evolution JustPop Into Darwin’s Head?Pop Into Darwin’s Head?

If notIf not

Where Did It Come From?Where Did It Come From?


New Ideas Build From Old IdeasNew Ideas Build From Old Ideas

I am Carolus Linnaeus, and in 1735I published “Systema Naturae” a new system of classification based on an organisms physical characteristics

I am Carolus Linnaeus, and in 1735I published “Systema Naturae” a new system of classification based on an organisms physical characteristics

Carolus LinnaeusCarolus Linnaeus

I am Count Georges Buffon, and in 1749I published “Historie Naturelle” which

proposed new ideas about relationships between organisms.

I am Count Georges Buffon, and in 1749I published “Historie Naturelle” which

proposed new ideas about relationships between organisms.

Count BuffonCount Buffon

I am Erasmus Darwin. Grandfather to Charles

Darwin. In 1795 I published “Zoonomia” where I discussed how organisms could evolve

through competition.

I am Erasmus Darwin. Grandfather to Charles

Darwin. In 1795 I published “Zoonomia” where I discussed how organisms could evolve

through competition.

Erasmus DarwinErasmus Darwin

I am Jean-Baptiste Lamarck, and in 1809I published “Philosphie Zoologique”

where I proposed how evolution could occur in response to environmental

change over long periods of time

I am Jean-Baptiste Lamarck, and in 1809I published “Philosphie Zoologique”

where I proposed how evolution could occur in response to environmental

change over long periods of time

Jean-Batiste LamarckJean-Batiste Lamarck


Carolus LinnaeusCarolus Linnaeus

• 17351735– Published “Published “Systema NaturaeSystema Naturae””– System of classification which is System of classification which is

the foundation of our current the foundation of our current systemsystem

– Based on similarities in structureBased on similarities in structure– Rejected “immutability”Rejected “immutability”– Thought organisms changed in Thought organisms changed in

response to their environmentresponse to their environment


Georges Louis Leclerc de BuffonGeorges Louis Leclerc de Buffon

• 17491749– Published “Published “Historie NaturelleHistorie Naturelle””– Based on fossils, proposed Based on fossils, proposed

species shared ancestorsspecies shared ancestors– Rejected Earth was 6,000 years Rejected Earth was 6,000 years

old – suggested much olderold – suggested much older


Erasmus DarwinErasmus Darwin

• Grandfather of Charles DarwinGrandfather of Charles Darwin• 1731-18021731-1802– Published “Published “ZoonomiaZoonomia””– Proposed all living things were Proposed all living things were

descended from a common descended from a common ancestorancestor• More complex life forms arose from More complex life forms arose from

less complex life formsless complex life forms


Jean-Baptiste LamarckJean-Baptiste Lamarck

• 1809 - 1809 - Publishes “Publishes “Philosphie ZoologiquePhilosphie Zoologique””– Year of Darwin's BirthYear of Darwin's Birth– Proposed organisms changed in response Proposed organisms changed in response

to their environmentto their environment• Those changes were passed to Those changes were passed to

offspringoffspring

– Inheritance of Acquired TraitsInheritance of Acquired Traits• GiraffesGiraffes• Blacksmiths sonsBlacksmiths sons


Georges CuvierGeorges Cuvier

• French ZoologistFrench Zoologist• Believed the Earth was older than 6,000 Believed the Earth was older than 6,000

yearsyears– Based on his study of fossilsBased on his study of fossils• Saw changes in different layersSaw changes in different layers• Different layers contained specific Different layers contained specific

sets of fossilssets of fossils• He observed many organisms that He observed many organisms that

no longer existedno longer existed– Developed the concept of extinction Developed the concept of extinction

through through CatastrophismCatastrophism


Cuvier & CatastrophismCuvier & Catastrophism

• Catastrophic EventsCatastrophic Events– Natural DisastersNatural Disasters– FloodsFloods– Volcanic EruptionsVolcanic Eruptions

• Causes species to become extinctCauses species to become extinct• Appearance of new species followed Appearance of new species followed

movement into areas where old species movement into areas where old species became extinct. became extinct.


James Hutton & GradualismJames Hutton & Gradualism

• Scottish Geologist – 1790’sScottish Geologist – 1790’s• Proposed that landforms change Proposed that landforms change

gradually over timegradually over time– ErosionErosion– SedimentationSedimentation– EarthquakesEarthquakes

• Expanded Earths age to millions Expanded Earths age to millions of yearsof years


Charles Lyell & UniformitarianismCharles Lyell & Uniformitarianism

• English Geologist & author of English Geologist & author of “Principles of Geology” “Principles of Geology” published in 1830, which published in 1830, which Darwin took aboard the HMS Darwin took aboard the HMS BeagleBeagle

• UniformitarianismUniformitarianism– Geologic processes are uniform in Geologic processes are uniform in

rate throughout timerate throughout time


UniformitarianismUniformitarianism

foothill high school science department principles of evolution early idea’s darwin was not the...

Documents

old species

new ideas

published zoonomiaproposed

new system of classification

years old

old ideasi

darwins head

erasmus darwini