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Evolution vocabulary

QuestionAnswer
Evolution hereditary changes in groups of living organisms over time The process by which different kinds of living organism ate thought to have developed.
Lamarck 1744-1829 organism developed from lower to higher stages.
Lamarcks theories use and dis-use:use it or lose it inheritance of acquired charterstics tics
Darwin studied galapagos island wrote a book 1859 "on the origin of species by means of natural selection"
Darwins theories Natural Selection
GRADUALISM SLOW STEADY CHANGE OVER TIME BASED ON ENVIRONMENTAL NEED, EVOLUTION NOT PUNCUATED
PUNCTUATED EQUILIBRIUM CHANGES OCCUR IN SHORT PERIODS OF TIME, THEN STAY CONSTANT FOR LONG PERIODS.
SEXUAL SELECTION CHARMING CHARACTERISTICS OF THE SEXES ARE PASSED ON FROM GENERATION TO GENERATION (like bird feather patterns)
Allele alternative form that a single gene may have for particular trait
Cladogram Diagram with branches that respresnt the hypothesized phylogeny or evolution of species or group: use bioinformatics morphological studies and information from DNA studies
Natural Selection Theory of evolution developed by Darwin based on four ideas ; excess reproduction varitation inheritance and the advantages of specific traits in an environment
homologous structure anatomically similar structure inherited from a common ancestor
fitness measure of a trait's relative contribution to the following generation
adaptive radiation diversification of a species into a number of different species, often over a relatively short time span
analogous structure structure that has the same function but different construction and was not inherited from a common ancestor
artificial selection Darwin's term for the selective breeding of organisms selected for certain traits in order to produce offspring having those traits
vestigial structure reduced form of a functional structure that indicates shared ancestry
adaptation inherited characteristic of a species that develops over time in response to an environmental factor, enabling the species to survive.
Niche role and position a species has in its environment;
population A group of organisms of the same species that occupy the same geographic place at the same time
ERA a large division of Earth's geologic time scale that is further divided into one or more periods.
fossil preserved evidence of an organism, often found in sedimentary rock, that provides evidence of past life.
paleontologist scientist who studies fossils.
Created by: Nabbbs