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DTSTART:19960101T000000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260626T003940Z DTSTART;VALUE=DATE-TIME:20100505T130000 DTEND;VALUE=DATE-TIME:20100505T140000 SUMMARY:Complexity Forum - Jamie Luo TZID:Europe/London UID:20100505-094d43d5385c299a01386c3bd8b56e9c@warwick.ac.uk CREATED:20100426T090551Z DESCRIPTION:Speaker: Jamie Luo (TV) Title: Functionality and Speciat ion in Boolean Networks Abstract: Boolean Networks have been used to mod el Genetic Regulatory Networks since Stuart Kauffmann proposed them as a model in the 1960s. Early work focused on how the topology of a network influenced its dynamics. We investigate the inverse problem asking which network topologies satisfy a specified dynamic. In earlier work by A. Wa gner et al [1\, 2] a biological function or cell process was specified by an initial condition v(0) and an end point v ∞ in the expression state space. By so specifying a biological function one can then ask which net works perform this function. Our view is that in many cases a more appro priate means for defining a biological function would be by specifying th e entire path {v(0)\, v(1)\, ...\, v(T )}. We will report on how these t wo contrasting definitions of biological functionality lead to divergent results for their respective functional topologies\, particularly regard ing the implications for neutral evolution\, multi-functionality and spe ciation. References [1] Ciliberti S\, Martin OC\, Wagner A (2007) Innova tion and robustness in complex regulatory gene networks. Proc Natl Acad Sci USA 104:1359113596. [2] Martin OC\, Wagner A (2008) Multifunctionali ty and robustness trade-offs in model genetic circuits. Biophysical Jour nal\, 94 (8)\, pp. 2927-2937. LOCATION: CATEGORIES:Seminar Room D1.07,forum LAST-MODIFIED:20120709T145408Z ORGANIZER;CN=Colm Connaughton: END:VEVENT END:VCALENDAR