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Darwin’s Theory of EvolutionIdeas that Shaped Darwin’s
ThinkingChapter 15-2
Image from: Biology by Miller and Levine; Prentice Hall Publishing©2006
Ideas that shaped Darwin’s thinking:
In 1785 ______________proposes that the EARTHwas _______ by_________________occurring over__________ periods of time, and is_______________ old.
very long
James Hutton
shapedgeological forces
millions of years
http://www.creationism.org/books/TaylorInMindsMen/TaylorIMMc03.htm
Ideas that shaped Darwin’s thinking:
In 1833 ___________ explains that the geological Processes, still ___________, have shaped Earth’s features over ________________
Charles Lyell
occurring now
http://www.biologydaily.com/biology/Sir_Charles_Lyell
long periods of time
Ideas that shaped Darwin’s thinking:
http://wrgis.wr.usgs.gov/docs/usgsnps/animate/A08.gif
SINCE THENTheory of Pangaea
…and continentaldrift
Ideas that shaped Darwin’s thinking:
_____________________
He observed that babies were being bornfaster than people were dying. Hereasoned that if the human populationcontinued to grow, sooner or later therewould be _______________________
Thomas Malthus (1798)
insufficient space & food
http://www.nndb.com/people/250/000024178/malthus.jpg
Living things must compete for food, shelter, space, mates
competition
http://www.wasatchcomputers.net/gallery/elk_fight.jpg
Ideas that shaped Darwin’s thinking:
___________________________was one of first scientists to recognize living things_______________ and thatall species have ________ fromother species.
Lamarck published his hypothesis of________________________ the year Darwin was born.
changed over time
Jean-Baptiste Lamarck (1809)
descended
Inheritance of Acquired traits
http://www.educa.rcanaria.es/fundoro/00.corsi.htm
The male fiddler crab uses itsfront claw to _________mates and fight off _____________.
Through _________ use, the front claw becomes ________.
The fiddler passes on this __________ characteristic to its offspring
attract
predators
larger
repeated
acquired
Inheritance of acquired traits
What’s wrong with Lamarck’s hypothesis?Lamarck didn’t know aboutgenes and how traits are
_______.
If you lifted weights yourwhole young adult life, andthen you had children, wouldyour kids be more muscular?
inherited
NO! ________ traits can ____ be __________ to their offspring.
http://www.geocities.com/arnold_schwarzenegger_pictures/
ACQUIRED NOT PASSED ON
What’s right with Lamarck’s hypothesis?
Lamarck was first to develop a scientifichypothesis about _______and recognize that organisms are________________________
evolution
adapted to their environments
http://pegasus.cc.ucf.edu/~he599900/giraffeeating.jpg
a. The earth is really old, and slowly changesb. Living things pass acquired changes on to their offspringc. Sooner or later growing populations run out of resourcesd. Living things change slowly over time because of competition for resources,
and pass those changes on to their offspring
Hutton
Lyell
Malthus
Lamarck
Match the letter of the idea withthe man or men who proposed it:
a. The earth is really old, and slowly changesb. Living things pass acquired changes on to their offspringc. Sooner or later growing populations run out of resourcesd. Living things change slowly over time because of competition for resources,
and pass those changes on to their offspring
Hutton
Lyell
Malthus
Lamarck
a.
c.
b.
d.
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