Results 41 to 50 of about 69,526 (310)
Formal Systems Architectures for Biology [PDF]
, 2011 When the word "systems" is used in systems biology, it invokes a variety of assumptions about what defines the subject under investigation, which in turn can lead to divergent research outcomes.
Bradly Alicea
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Making Memories: Why Time Matters [PDF]
, 2018 In the last decade advances in human neuroscience have identified the critical importance of time in creating long-term memories. Circadian neuroscience has established biological time functions via cellular clocks regulated by photosensitive retinal ...
Evans, M. D. R. +2 more
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Quantitative analysis of regulatory flexibility under changing environmental conditions [PDF]
, 2010 The circadian clock controls 24-h rhythms in many biological processes, allowing appropriate timing of biological rhythms relative to dawn and dusk. Known clock circuits include multiple, interlocked feedback loops.
Adrian W Thomson +12 more
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What season suits you best? Seasonal light changes and cyanobacterial competition [PDF]
, 2015 Nearly all living organisms, including some bacterial species, exhibit biological processes with a period of about 24 h called circadian (from the Latin circa, about and dies, day) rhythms.
Cascallares, Maria Guadalupe +1 more
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Light and circadian regulation of clock components aids flexible responses to environmental signals [PDF]
, 2014 The circadian clock measures time across a 24h period, increasing fitness by phasing biological processes to the most appropriate time of day. The interlocking feedback loop mechanism of the clock is conserved across species; however, the number of loops
Akman, Ozgur E +5 more
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Circadian and Geotactic Behaviors: Genetic Pleiotropy in Drosophila Melanogaster
Journal of Circadian Rhythms, 2016 Data presented in this paper test the hypotheses that Hirsch’s positive geotaxis ('Lo') and negative geotaxis ('Hi5') strains of Drosophila melanogaster (fruit fly) differ in length of the free-running circadian activity period (tau) as well as adult ...
Dale L Clayton
doaj +1 more source
Clinical Epigenetics, 2023 Background Aging has been reported as a major risk factor for severe symptoms and higher mortality rates in COVID-19 patients. Molecular hallmarks such as epigenetic alterations and telomere attenuation reflect the biological process of aging. Epigenetic
Yosra Bejaoui +8 more
doaj +1 more source
A Biological Clock in Drosophila
Cold Spring Harbor Symposia on Quantitative Biology, 1985 The per locus plays a central role in the organization and function of the Drosophila biological clock. The gene has been mapped to a 7-kb DNA segment by physically locating the breakpoints of several chromosomal rearrangements that disrupt per function. This DNA contains a single transcription unit which produces a 4.5-kb poly(A)+ RNA.
F.R. Jackson +3 more
openaire +3 more sources
In Synch but Not in Step: Circadian Clock Circuits Regulating Plasticity in Daily Rhythms [PDF]
, 2016 The suprachiasmatic nucleus (SCN) is a network of neural oscillators that program daily rhythms in mammalian behavior and physiology. Over the last decade much has been learned about how SCN clock neurons coordinate together in time and space to form a ...
Evans, Jennifer A., Gorman, M. R.
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Circadian rhythm and cell population growth [PDF]
, 2010 Molecular circadian clocks, that are found in all nucleated cells of mammals, are known to dictate rhythms of approximately 24 hours (circa diem) to many physiological processes.
Bekkal Brikci +27 more
core +5 more sources