selection differential The difference between the average value of a quantitative character in a whole population and the average value of those selected to reproduce the next generation.
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disruptive selection , disruptive selection Selection that changes the frequency of alleles in a divergent manner, leading to the fixation of alternative alleles in members… Stabilizing Selection , stabilizing selection(maintenance evolution, normalizing selection) Natural selection that selects against extremes at either end of the range of phe… Select , se·lect / səˈlekt/ • v. [tr.] carefully choose as being the best or most suitable: students must select their own program | [tr.] he has been selecte… Directional Selection , directional selection Natural selection that favours the establishment of one particular advantageous mutation within a population, resulting in a ch… Selection , Selection refers to an evolutionary pressure that is the result of a combination of environmental and genetic pressures that affect the ability of an… Average , av·er·age / ˈav(ə)rij/ (abbr.: avg.) • n. 1. the result obtained by adding several quantities together and then dividing this total by the number of…
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Selective Service Acts Conscription Act 12 Stat. 731 (1863) Burke-Wadsworth Selective Training and Service Act 54 Stat. 885 (1940) Universal Military Training and Service Act 62 Stat. 604 (1948)