*lähtepopulatsioonist vaesema genofondiga populatsiooni teke 1968. aastal[31] puhus populatsioonigeneetik Motoo Kimura uuesti lõkkele arutelud geenitriivi rolli üle, kui ta käis välja oma molekulaarse evolutsiooni neutraalse teooria, mis väidab, et enamus genoomis toimuvatest muudatustest on tingitud geneetilisest triivist, mis rakendub neutraalsetele mutatsioonidele[3]. Geenitriivi rolli evolutsiooni mõjutava jõuna on kritiseerinud John H. Gillespie[32] ja Will Provine, kes väidavad, et suurem mõju neutraalsete mutatsioonide levikule on hoopis valikul, mis veab tänu geenide aheldatusele soodsamate geenivariantidega kaasa nende külge aheldunud neutraalseid alleele.
ecutives? Why are these shrewd and tested people championing a practice that their potential watchers find disagreeable and their most creative talents find personally insulting? The answer is both simple and intriguing: They know what the research says. Experiments have found that the use of canned merriment causes an audience to laugh longer and more often when humorous material is presented and to rate the material as funnier (Provine, 2000). In addition, some evidence indicates that canned laughter is most effective for poor jokes (No- sanchuk 8{ Lightstone, 1974). In light of these data, the actions of television executives make perfect sense. The introduction of laugh tracks into their comic programming increases the hu- morous and appreciative responses of an audience, even-and especially-when the material is of poor quality. Is it any surprise, then, that television, glutted as it
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