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19 Cards in this Set

  • Front
  • Back
Gradualism
Theory that describes evolution as a slow change of one species to another new species
Embryology
The study of the development of embryos.
Variation
an inherited trait that makes an individual different for other members of the same species
Punctuated equilibrium
A model of evolution that shows that the rapid evolution of species comes about by the mutation of a few genes
Natural selection
Theory that individuals of a species with traits most favorable for a specific environment survive and pass on these traits
Homo sapiens
The species that we belong to.

We are Homo sapiens sapien
Hominids
A human like primate that eat both meat and plans and walk upright on two feet
Vestigial structure
A body part that is reduced in size and doesn't seem to have a function.

Appendix
Extinction
the dying out of a species
Endanger species
a species who's numbers are so low that it is in danger of becoming extinct
Population
A group of organisms of one species living together in an area.
Sedmentary Rock
A rock type formed from layers of material (sand, silt, clay or minerals) that settle out of a liquid (water)
Relative dating
Dating fossils by there relationship to other rock layers above and below. Older rock layer below younger rocks layers.
Homologous structures
Body parts that are similar in origin and structure.

Limbs
Radioactive elements
Elements whose atoms give off radiation, a form of atomic energy
Fossils
Remains of an organisms from an earler geologic time
Evolution
change in the hereditary features of a species over time
Species
a group of organisms whose members look alike and sucsessfully reproduce among themselves
Primates
A group of mammals that include monkeys, apes and humans.
(have opposable thumb)