Definition for selection pressure - Oxford Dictionaries Online (World English)

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	selection pressure (se¦lec\|tion pres\|sure) noun Biology an agent of differential mortality or fertility that tends to make a population change genetically: their range of variation is constrained by natural selection pressures imposed by their environment		More words in this category axenic commensal culture dendrogram denitrify ectoderm eukaryote heritable heterotic homogenize homologue isomorphic lysosome marginate natural classification phenotype point mutation somatic tetraploid triploid Nearby Words seladang selaginella selah Selangor seldom select select committee selectee selection selection pressure selection rule selectional selective selective attention selective service selectivity selectman selector selenate