Definition of Evolution (Darwin's time):

Descent with modification.

Definition of Evolution (currently):

A change in the genetic composition of a population from generation to generation.

Descent with modification:

A phrase Darwin used in proposing that Earth's many species are descendants of ancestral species that were different from the present-day species.

2 other ways in which evolution can be viewed:

Pattern and process.

The pattern of evolution:

is revealed by data,(from biology, geology, physics, and chemistry) these data are facts, they are observations about the natural world.

The process of evolution:

consists of the mechanisms that produce the observed pattern of change.

Name the people Darwin was influenced by:

Aristotle,

Look at the time line on pg. 463

How did Aristotle view evolution:

Thought there was none, thought things were fixed and unchanging.

Scala Naturae:

Defined by Aristotle as scale of nature, where each form of life, perfect and permanent has it's place on a ladder.