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Synopsis: It is said that "necessity is the mother of invention". To be sure, wheels and pulleys were invented out of necessity by the tenacious minds of upright citi zens. Looking at the history of mankind, however, one has to add that "Ieisure is the mother of cultural improvement". Man's creative genius flourished only when his mind, freed from the worry of daily toils, was permitted to entertain apparently useless thoughts. In the same manner, one might say with regard to evolution that "natural selection mere(y tnodifted, while redundanry created". Natural selection has been extremely effective in policing alleHe mutations which arise in already existing gene loci. Because of natural selection, organisms have been able to adapt to changing environments, and by adaptive radiation many new species were created from a common ancestral form. Y et, being an effective policeman, natural selection is extremely conservative by nature. Had evolution been entirely dependent upon natural selection, from a bacterium only numerous forms of bacteria would have emerged. The creation of metazoans, vertebrates and finally mammals from unicellular organisms would have been quite impos sible, for such big leaps in evolution required the creation of new gene loci with previously nonexistent functions. Only the cistron which became redun dant was able to escape from the relentless pressure of natural selection, and by escaping, it accumulated formerly forbidden mutations to emerge as a new gene locus.
Title: Evolution by gene duplication
Publisher: Springer-Verlag
Publication Date: 1970
Binding: Hardcover
Condition: new
Book Description Condition: New. Seller Inventory # 5072631
Book Description Condition: New. Seller Inventory # 21738534-n
Book Description Soft Cover. Condition: new. Seller Inventory # 9783642866616
Book Description PF. Condition: New. Seller Inventory # 6666-IUK-9783642866616
Book Description Condition: New. Seller Inventory # 21738534-n
Book Description Condition: New. PRINT ON DEMAND Book; New; Fast Shipping from the UK. No. book. Seller Inventory # ria9783642866616_lsuk
Book Description 8° , Leinen. Condition: Sehr gut. 160 Seiten, Tafeln Ausgetragenes Bibliotheksexemplar, Buch ist in einem sehr guten Zustand, Helltürkisfarbener Leineneinband mit Titelprägung in Schwarz, Einband leicht berieben, mit Spuren eines entfernten Bibliotheksetiketts, Ecken minimal berieben, Papier in altersgemäßem sehr gutem Zustand, 8 Tafeln mit Abbildungen in Schwarz-Weiss. . Als Versandart wählen wir immer eine schnelle Option (in Deutschland Brief oder DHL-Paket, ins Ausland Warenpost oder DHL-Paket). Preis inkl. MwSt. Sprache: Englisch Gewicht in Gramm: 406. Seller Inventory # 1001605
Book Description Condition: New. Seller Inventory # ABLIING23Mar3113020238154
Book Description Condition: Fair. Acceptable/Fair condition. Book is worn, but the pages are complete, and the text is legible. Has wear to binding and pages, may be ex-library. 0.91. Seller Inventory # 353-3642866611-acp
Book Description Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -It is said that 'necessity is the mother of invention'. To be sure, wheels and pulleys were invented out of necessity by the tenacious minds of upright citi zens. Looking at the history of mankind, however, one has to add that 'Ieisure is the mother of cultural improvement'. Man's creative genius flourished only when his mind, freed from the worry of daily toils, was permitted to entertain apparently useless thoughts. In the same manner, one might say with regard to evolution that 'natural selection mere(y tnodifted, while redundanry created'. Natural selection has been extremely effective in policing alleHe mutations which arise in already existing gene loci. Because of natural selection, organisms have been able to adapt to changing environments, and by adaptive radiation many new species were created from a common ancestral form. Y et, being an effective policeman, natural selection is extremely conservative by nature. Had evolution been entirely dependent upon natural selection, from a bacterium only numerous forms of bacteria would have emerged. The creation of metazoans, vertebrates and finally mammals from unicellular organisms would have been quite impos sible, for such big leaps in evolution required the creation of new gene loci with previously nonexistent functions. Only the cistron which became redun dant was able to escape from the relentless pressure of natural selection, and by escaping, it accumulated formerly forbidden mutations to emerge as a new gene locus. 180 pp. Englisch. Seller Inventory # 9783642866616