Adaptation and irreversibility in microevolution

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Adaptation and irreversibility in microevolution

Within the framework of population genetics we consider the evolution of an asexual haploid population under the effect of a rapidly varying natural selection (microevolution). We focus on the case in which the environment exerting selection changes stochastically. We derive the effective genotype and fitness dynamics on the slower time-scales at which the relevant genetic modifications take pl...

متن کامل

Microevolution from shock to adaptation revealed strategies improving ethanol tolerance and production in Thermoanaerobacter

INTRODUCTION The molecular links between shock-response and adaptation remain poorly understood, particularly for extremophiles. This has hindered rational engineering of solvent tolerance and correlated traits (e.g., productivity) in extremophiles. To untangle such molecular links, here we established a model that tracked the microevolution from shock to adaptation in thermophilic bacteria. ...

متن کامل

Microevolution During Serial Mouse Passage Demonstrates FRE3 as a Virulence Adaptation Gene in Cryptococcus neoformans

Passage in mice of opportunistic pathogens such as Cryptococcus neoformans is known to increase virulence, but little is known about the molecular mechanisms involved in virulence adaptation. Serial mouse passage of nine environmental strains of serotype A C. neoformans identified two highly adapted virulent strains that showed a 4-fold reduction in time to death after four passages. Transcript...

متن کامل

Microevolution in an electronic microcosm.

The evolution of microbial populations in simple environments such as chemostats is still not fully understood. The classical interpretation of adaptation involves a process of successive substitution whereby a new dominant genotype arises by mutation from the genotype previously dominant and spreads more or less rapidly through the population until it is nearly fixed. The population is, thus, ...

متن کامل

Microevolution and mega - icebergs in the Antarctic

NEUROSCIENCE. For the article ‘‘A cAMP-response element binding protein-induced microRNA regulates neuronal morphogenesis,’’ by Ngan Vo, Matthew E. Klein, Olga Varlamova, David M. Keller, Tadashi Yamamoto, Richard H. Goodman, and Soren Impey, which appeared in issue 45, November 8, 2005, of Proc. Natl. Acad. Sci. USA (102, 16426–16431; first published October 31, 2005; 10.1073 pnas.0508448102),...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: EPL (Europhysics Letters)

سال: 2014

ISSN: 0295-5075,1286-4854

DOI: 10.1209/0295-5075/108/68002