evo 16 2_presentation
TRANSCRIPT
Charles DarwinCharles DarwinVoyage of DiscoveryVoyage of DiscoveryVoyage of DiscoveryVoyage of DiscoveryVoyage of DiscoveryVoyage of Discovery
Uhhh hem....Uhhh hem....Mr. Sapora PresentsMr. Sapora Presents
1931-19361931-1936Around the world aboard the H.M.S BeagleAround the world aboard the H.M.S Beagle
1700’s & 1800’s Exciting Science Times
Biology and Geology become Sciences!!!!Biology and Geology become Sciences!!!!1735 1830
What does Darwin find here?What does Darwin find here?Let’s first take a look at what Let’s first take a look at what Darwin knew when he showed Darwin knew when he showed
up...up...
ProcessesProcesses& &
FeaturesFeaturesDeeeeeeeeeep TimeDeeeeeeeeeep TimeLaws of nature are constant over time and Laws of nature are constant over time and that scientists must explain past events in that scientists must explain past events in terms of processes they can observe in the terms of processes they can observe in the
present....present....
Hutton & LyellHutton & Lyell
Jean Baptiste Lamarck18091809
Suggests that organisms could change during their lifetimes by selectively using or NOT using various parts of their bodies.Traits altered by an individual organism during its lifetime he called: Acquired CharacteristicsAcquired Characteristics
Principle of Acquired Characteristics: Principle of Acquired Characteristics: Characteristics acquired by an individual organism could be passed on to their offspring.
Malthus❖ If the human population grew unchecked there wouldn’t
be enough living space and food for everyone.
❖ War, famine, disease, etc. keep populations “in check”.
❖ Malthus did put coal in little kids stockings too...
What’s Next?!Darwin was convinced that species evolved by the
time he read Malthus. What was Darwin missing for his explanation on evolution?
A Mechanism!A Mechanism!
A scientific explanation based A scientific explanation based on natural processes.on natural processes.
To Be Continued....