Jean BaptisteJean Baptiste Lamarck Lamarck

August 1August 1stst 1744- 1744-

December 18December 18thth 1829 1829

Early LifeEarly Life

• Born Benzentin-le-PetitBorn Benzentin-le-Petit

• Was sent to Jesuit school in AminesWas sent to Jesuit school in Amines

• Received classical education until 15Received classical education until 15

• At age 15 father died and joined the At age 15 father died and joined the militarymilitary

Early life cont.Early life cont.

• While in military began to study plantsWhile in military began to study plants

• At age 24 left military and studied At age 24 left military and studied medicine in Paris for 4 yearsmedicine in Paris for 4 years

• At medical school became interested At medical school became interested in Meteorology, chemistry, and shell in Meteorology, chemistry, and shell collectingcollecting

Plants of FrancePlants of France

• In 1779 Lamarck published his first of many In 1779 Lamarck published his first of many books books Flore FrançoisFlore François or Plants of France a 3 or Plants of France a 3 volume setvolume set

• Was elected into the Academy of Sciences Was elected into the Academy of Sciences where he became an Associate Botanist in where he became an Associate Botanist in 17831783

• Wrote The King’s Garden in 1788 and became Wrote The King’s Garden in 1788 and became Chair of botany and keeper of the herbariumChair of botany and keeper of the herbarium

Invertebrate ZoologyInvertebrate Zoology

• His biggest contributions were His biggest contributions were in the fields of invertebrate in the fields of invertebrate zoology and evolutionzoology and evolution

• Published Natural History of Published Natural History of Animals without backbones Animals without backbones from 1815-1822from 1815-1822

Work with EvolutionWork with Evolution

• Accepted view that animals in nature were Accepted view that animals in nature were arranged on one continuous natural scalearranged on one continuous natural scale

• Meaning that when life started all other life Meaning that when life started all other life forms were a result of time, and forms were a result of time, and environment interaction environment interaction

• Ideas initially presented in 1809 in Ideas initially presented in 1809 in Zoological Philosophy Zoological Philosophy

Revolutionary IdeasRevolutionary Ideas

• In his books he was the first person In his books he was the first person to use the word biology in the to use the word biology in the modern sensemodern sense

• In geology talked about In geology talked about uniformitarianism which lead the uniformitarianism which lead the way for continental driftway for continental drift

• His theories of evolution were a His theories of evolution were a large protest against current large protest against current thoughtthought

LamarckismLamarckism

• In his volumes he said environment was In his volumes he said environment was controlled by three biological lawscontrolled by three biological laws

• Organ developmentOrgan development

• Law of use and disuseLaw of use and disuse

• Inheritance of acquired characteristicsInheritance of acquired characteristics

Lamarckism’s forcesLamarckism’s forces

• In Lamarckism there are two main In Lamarckism there are two main forces driving evolutionforces driving evolution

• The complexifiying ForceThe complexifiying Force

• And the Adaptive forceAnd the Adaptive force

Lamarck’s LegacyLamarck’s Legacy

• While his theory is generally thought While his theory is generally thought of as False Lamarck made the first of as False Lamarck made the first theory of evolutiontheory of evolution

• Darwin took many of Lamarck’s ideas Darwin took many of Lamarck’s ideas into account when coming up with into account when coming up with natural selectionnatural selection

Lamarck’s Legacy cont.Lamarck’s Legacy cont.

• Major worksMajor works– Plants of FrancePlants of France– The Kings GardenThe Kings Garden– Natural History of Animals without Natural History of Animals without

backbonesbackbones

• Major TheoriesMajor Theories– LamarckismLamarckism– Use/DisuseUse/Disuse– Inheritance of acquired traits Inheritance of acquired traits

ReferencesReferences

• http://www.ucmp.berkeley.edu/history/lamarck.htmlhttp://www.ucmp.berkeley.edu/history/lamarck.html

• http://en.wikipedia.org/wiki/Jean-Baptiste_Lamarckhttp://en.wikipedia.org/wiki/Jean-Baptiste_Lamarck

  

• http://www.mnsu.edu/emuseum/information/http://www.mnsu.edu/emuseum/information/biography/klmno/lemarck_jean.htmlbiography/klmno/lemarck_jean.html

• http://evolution.berkeley.edu/evolibrary/article/_0/http://evolution.berkeley.edu/evolibrary/article/_0/history_09history_09

• http://www.nndb.com/people/275/000057104/http://www.nndb.com/people/275/000057104/