Chapter 2 Flashcards
What is the definition of evolution.
Change in the genetic makeup of a population over time.
Who are the three people who came with up the pre-darwinian ideas.
Aristotle, Plato, Jean Lamarck.
What was Aristotle’s Idea.
He believed that species don’t change over time rather natural order exists in the world and doesn’t change.
What was Plato’s idea
All objects can be represented by ideal forms, and variation between individuals represents a deviation from the ideal form.
What did Jean Lamarck believe
living things evolved in a continuously upward direction, from dead matter, through simple to more complex forms, toward human “perfection.”
What is the linear force
evolution towards increased complexity and perfection and this is driven by some internal force in all living things.
What is the lateral force
that Organisms have features that suit them to
where and how they live. Mechanism for adaptation is use and disuse of parts.
What is uniformitarianism
That the world is under constant slow change.
What are homologous structures
Hint: Whales and birds
body parts similar in
structure but can be functionally different.
What are Analogous structures
Hint: birds and insects
similar in function but structurally different.
