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Evolution

CPO Chapter 13

QuestionAnswer
an inherited trait that helps an organism survive. adaptatuion
the process of how organisms acquire adaptations over time evolution
an organism from which others have descended ancestor
a tree-like diagram that displays evolutionary relationships among living species and their ancestors. cladogram
bod structures that have a common origin but do not necessarily perform the same function. homologous structures
a historical sequence of life on Earth based on the sequence of fossils. fossil record
the process by which organisms with favorable adaptations survive and reproduce at a higher rate than organisms with less-favorable adaptations. natural selection
the variety of alleles in a population genetic variation
occurs when the environment changes and tha adaptations of a species are no longer sufficient for its survival. extinction
Organisms change over_______. time
All organisms are descended from ________ __________ by a process of branching. common ancestor
Evolution is _______. taking place over a long time. gradual
The mechanism of evolution is _________ __________. natural selection
Malthus was an early scientist that proposed the the human population grows fast than the _____ ______. food supply
Food shortages results in a ________ ____ ___________. struggle for existence
Created by: doakes27