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.