Aristotle - Answers earliest philosopher; species are FIXED; scale of nature: low complexity to high
complexity
James Hutton - Answers geologist; gradualism-earth is old and shaped by small SLOW changes
Thomas Malthus - Answers economist; "Essay of the Principle of Population"; human population growth
is LIMITED BY RESOURCES
Jean-Baptiste Lamarck - Answers naturalist; organisms change due to environment, traits that are used
IMPROVE AND ARE INHERITED by offspring (wrong); increasingly complex species
Lamarckian Inheritance - Answers traits change because of need, INHERITANCE OF ACQUIRED -during
lifetime- TRAITS (wrong)
August Weismann - Answers biologist who tested Larmarckian inheritance; acquired traits are NOT
inherited by offspring; chopped tail parents produce normal tail offspring; "Essays on Heredity"
Georges Cuvier - Answers paleontologist; fossils as 1ST EVIDENCE OF EXTINCTION; new species are due
to immigration after "sudden events" (wrong)
Charles Lyell - Answers geologist; "Principles of Geology"; the processes that shape the earth are gradual
and HAVE BEEN UNIFORM OVER TIME
Charles Darwin - Answers naturalist; voyage on the HMS Beagle; observations on the voyage led him to
think about how species arise
Darwin 1837 - Answers draws 1st phylogenetic tree
Darwin 1844 - Answers wrote his essay on descent with modification
Alfred Russell Wallace - Answers naturalist; sent Darwin HIS hypothesis of natural selection FIRST in
1858
On the Origin of Species - Answers Darwin published it in 1859;
-proposes NATURAL SELECTION AS THE MECHANISM OF EVOLUTION
-DESCENT WITH MODIFICATION
Descent with modification - Answers species change over time and share a common ancestor
Darwin's artificial selection experiments - Answers illustrated trait variation and heritability; BOTH useful
AND USELESS traits are inherited (refutes Lamarck's idea that traits only improve)
Natural Selection - Answers -many offspring produced but NOT ALL SURVIVE