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Evolution

Evoution terms and descriptions

TermDefinition
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.
Created by: dtoohey0