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15 Cards in this Set

  • Front
  • Back
group of organisms that share similar characteristics and can reproduce among themselves.
Sedimentary rock
A type of rock that is more likely to contain fossils and is formed when minerals are deposited from a solution.
Natural selection
Organisms with traits best suited to their environment are more likely to survive and reproduce; includes concepts of variations, overproduction, and competition.
inherited trait that makes an individual different from other members of the same species and results from a mutation in the organism’s genes.
Any variation that makes an organism better suited to its environment.
A model describing evolution.
Punctuated equilibriom
Model describing the rapid evolution that occurs when mutation of a few genes results in a species suddenly changing into a new species.
Radioactive element
Element that gives off a steady amount of radiation as it slowly changes to a nonradioactive element.
group of mammals including humans, monkeys, and apes that share characteristics.
Change in inherited characteristics over time.
humanlike primate that appeared about 4 million to 6 million years ago, ate both plants and meat, and walked upright on 2 legs.
Homo sapiens
early humans that likely evolved from Cro- Magnons.
Study of embryos and their development.
Body parts that are similar in structure and origin and can be similar in function.
Vestigial structure
structure that doesn’t have a function and once have functioned in the body of an ancestor.