Evolution by Gene Duplication

Name: Evolution by Gene Duplication
Brand: Springer, Berlin
SKU: 9783642866616
Price: 43896 HUF
Availability: InStock

Szerző: Susumu Ohno

Nyelv:

Kötés: Puha kötésű

Kiadó: Springer, Berlin

Elérhetőség: Beszállítói készleten alacsony példányszámban

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It is said that "necessity is the mother of invention". To be sure, wheels and pulleys were invented...

Információk a könyvről

Szerző

Susumu Ohno

Nyelv

Angol

Kötés

Könyv - Puha kötésű

Kiadva

2013

oldal

160

EAN

9783642866616

ISBN

3642866611

Enbook ID

05281860

Kiadó

Springer, Berlin

Súly

353

Méretek

178 x 254 x 10

Teljes leírás

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.

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Evolution by Gene Duplication

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