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Evolution 4-4 & 4-5

TermDefinition
biotic Pertaining to living organisms or their actions within an ecosystem.
adaptation A characteristic or trait that helps an organism survive and reproduce in its environment.
advantageous trait A beneficial characteristic that increases an organism's chances of survival and reproduction.
beneficial Having a positive effect or promoting the well-being of an organism.
coevolution The evolution of two or more species in response to each other over time.
convergent evolution The independent evolution of similar traits in unrelated species due to similar environmental pressures.
detrimental Having a harmful or negative effect on an organism.
distribution The geographic range or spread of a species or population.
diverge To separate or differ from a common ancestor or point.
ecosystem A biological community of interacting organisms and their physical environment.
fitness The ability of an organism to survive and reproduce in its environment, often measured by reproductive success.
gene A unit of heredity that carries genetic information and is passed from parent to offspring.
gene frequency The proportion of a particular allele in a population's gene pool.
gene pool The total collection of genes and alleles present in a population at a given time.
genetic variation The diversity of genes and alleles within a population or species.
geographic isolation Physical separation of populations of a species, often leading to reproductive isolation and speciation.
mutation A change in the DNA sequence of a gene, which may result in genetic variation and evolution.
natural selection The process by which organisms better adapted to their environment tend to survive and reproduce more successfully.
phenotypic variation Variation in observable traits among individuals within a population.
population A group of organisms of the same species living in the same area and capable of interbreeding.
survival rate The proportion of individuals in a population that survive to a given age or stage.
trait A characteristic or feature of an organism, often determined by its genotype and influenced by environmental factors.
variation Differences among individuals within a population or species.
advantageous Beneficial or favorable for the survival and reproduction of an organism.
biotic Pertaining to living organisms or their interactions within an ecosystem.
biotic factor A living component of an ecosystem, including plants, animals, and microorganisms.
disturbance A disruption or change in an ecosystem, affecting the abundance and distribution of species.
environment The surroundings or conditions in which an organism lives, including both biotic and abiotic factors.
evolution The process of change in the heritable characteristics of biological populations over successive generations.
extinction The complete disappearance of a species or group of organisms from Earth.
fossil The preserved remains or traces of ancient organisms, providing evidence of past life and evolutionary history.
founder effect The reduced genetic diversity that occurs when a population is established by a small number of individuals.
gene flow The transfer of genetic material from one population to another through migration or dispersal.
genetic drift The random changes in allele frequencies within a population due to chance events.
genetic variation The diversity of genes and alleles within a population or species.
geographic isolation Physical separation of populations of a species, often leading to reproductive isolation and speciation.
geologic record The history of Earth's past as revealed by the study of rocks, fossils, and geological processes.
gradualism The theory that evolutionary change occurs gradually over long periods of time.
selective pressure Environmental factors that favor certain traits or characteristics in a population, influencing natural selection.
speciation The formation of new species through evolutionary processes.
species A group of organisms capable of interbreeding and producing fertile offspring.
stability The ability of an ecosystem or population to maintain its structure and function over time.
Created by: brookebiery
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