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Evolution
Evoution terms and descriptions
Term | Definition |
---|---|
Overprodduction | Specieces produces more offspring than can survive |
Variation | Differences between individuals of the same species |
Adaptation | A trait that is favourable to an organisms survival and reproduction |
Fitness | how good a particular genotype is at leaving offspring in the next generation relative to how good other genotypes are at it |
DNA | A large biological molecule composed of subunits known as nucleotides strung together in long chains. Changes in DNA result in mutations, which may be beneficial, neutral, or deleterious to the organism. |
Species | A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding |
Allele | Each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome. |
Chromosome | A double stranded DNA molecule that contains a series of specific genes along its length. In most sexually reproducing organisms, chromosomes occur in pairs, with one member of the pair being inherited from each parent. |
Evolution | Evolution consists of changes in the heritable traits of a population of organisms as successive generations replace one another. It is populations of organisms that evolve, not individual organisms. |
Population | A group of organisms of the same species that are in close enough proximity to allow them to interbreed. |
Speciation | The evolutionary processes through which new species arise from existing species. |
Trait | A physical or behavioral characteristic of an organism. |