Chapter 22 - Natural Selection Flashcards
Why are some traits considered vestigial?
They are reduced in size, complexity, and function compared with traits in related species.
What’s an adaptation?
A trait that improves the fitness of its bearer, compared with individuals without the trait
What were Plato’s thoughts?
Species were immutable.
What were Aristotle’s thoughts?
There was a species ladder.
What were Lamark’s thoughts?
Species acquired characteristics by striving to climb Aristotle’s ladder.
Descent with Modification
Darwin’s term for how all organisms are related
Who worked with Darwin?
Alfred Russel Wallace
Dating Methods
Used radiometric/carbon/tree rings etc.
Transitional Features
show how species are related and how some have evolved from others. Science can predict what should appear in certain geological layers – and we indeed find them.
What is an example of transitional features?
development of tetrapod limb
Why is there Tuberculosis Antibacterial Immunity
mutated RNA polymerase causes rifampin not to work
Evo-devo
a small genetic change results in a large phenotypic changes because via altered development.
