Compléter OrganismsVersion en ligne Fill in the blanks! par Julia Llaguno 1 Adaptation Phylogeny Selection mutation Evolution Altruism Natural Population Habitat Species is the change in the gene pool of a population over time by such processes as mutation , natural selection , and genetic drift . is any alteration due to genetic variation in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment . is the process by which forms of life having traits that better enable them to adapt to specific environmental pressures , as predators , changes in climate , or competition for food or mates , will tend to survive and reproduce in greater numbers than others of their kind , thus ensuring the perpetuation of those favorable traits in succeeding generations . is the assemblage of a specific type of organism living in a given area . all the individuals of one species in a given area . are the major subdivision of a genus or subgenus , regarded as the basic category of biological classification , composed of related individuals that resemble one another , are able to breed among themselves , but are not able to breed with members of another species A is a sudden departure from the parent type in one or more heritable characteristics , caused by a change in a gene or a chromosome . is the development or evolution of a particular group of organisms . is the natural environment of an organism ; place that is natural for the life and growth of an organism : a tropical habitat . is the behavior by an animal that may be to its disadvantage but that benefits others of its kind , as a warning cry that reveals the location of the caller to a predator .
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