Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
What are fossils?
|
remains traces or other direct evidence of past life forms
|
|
What isotopes are used to carbon date fossils?
|
C12 anad C14
|
|
What is Biogeography?
|
the study of the ditribution of plants and animals around the world
|
|
How is an analogous structure different from a homologous structure?
|
analogous structures share the same function with differing structures while homologous structures have similar structures and different functions
|
|
Is the theory of recapitulation accepted in modern science?
|
No
|
|
What is a mutation?
|
any change in a cell's DNA that is passed onto the next generation.
|
|
a mutation that provides and advantage is called what?
|
an adaptation
|
|
What are the sources of variation?
|
muatation and sexual reproduction
|
|
what is Thomas Malthus famous for?
|
the principle of population
|
|
What is Buffon's law?
|
-different regions have distinct plants and animals
-species must have improved and degenerated after dispersing away from the center of creation |
|
What is allopatric speciation?
|
the creation of one or more new species after being seperated and adapted from an original species
|
|
What is Gradualism?
|
speciation that occurs slowly
|
|
What is punctuated equilibrium?
|
speciation that evolves rapidly followed by periods of little or no change
|
|
What is taxonomy's widest level of classification?
|
Domain
|
|
What are selective pressures?
|
Environmental forces that result in the survival of only certain organisms with characteristics tnat provide resistance.
|
|
What is a dichotomous key?
|
a two part key used to identify living things
|
|
what was Darwin's workable theory based upon?
|
natural selection
|
|
what is asexual reproduction?
|
the production of offspring by a single parent, offspring inherit the gametes of that parent only
|
|
what are the most common type of mutations?
|
mutations that cause harm
|
|
Do mutations occur when "needed" by a species?
|
no, mutations occur at random with no design
|