molecular clock
As time goes by: A simple fool s guide to molecular clock approaches in invertebrates*
... in molecular clock ...relaxed molecular clocks, which incorporate rate variations across lineages ...strict molecular clock ...all molecular clock data sets under the ...
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Portuguese contributions to the discovery and characterization of the embryonic molecular clock
... the molecular clock is already operating in PSM prospective cells and that this clock could be providing cell positional information on both antero-posterior (AP) and medio-lateral (ML) axes (Freitas ...
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The relative ages of ectomycorrhizal mushrooms and their plant hosts estimated using Bayesian relaxed molecular clock analyses
... ASR, molecular clock analyses can be used to identify branches in the phylogeny in which the evolution of ECM could have been possible, based on the principle that a symbiosis cannot arise prior to the ...
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Loss of the molecular clock in myeloid cells exacerbates T cell mediated CNS autoimmune disease
... the molecular clock, regulating biological pathways that drive 24 h (circadian) rhythms in behaviour and ...The molecular clock has a profound in fl uence on innate immune function, and ...
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The endogenous molecular clock orchestrates the temporal separation of substrate metabolism in skeletal muscle
... ation and subsequent internalization of the receptor [101,115]. Interestingly, the genes that encode the insulin receptor substrate-1, Irs1 (CT 22.0), and its downstream PI3-kinase target, Pik3r1 (CT 19.0), are both ...
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Molecular clock of HIV 1 envelope genes under early immune selection
... lar clock is of interest as selection is often thought to be a rate-changing factor [2, 29], driving a genealogy to depart from that of random evolution by placing preference for particular lineages and perturbing ...
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Complete Genomic Sequence of Human Coronavirus OC43: Molecular Clock Analysis Suggests a Relatively Recent Zoonotic Coronavirus Transmission Event
... gene. Molecular clock analysis of the spike gene sequences of BCoV and HCoV-OC43 suggests a relatively recent zoonotic transmission event and dates their most recent common ancestor to around ...
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Rate variation during molecular evolution: creationism and the cytochrome c molecular clock
... c clock to determine precise pri- mate phylogenies, much broader data sets have clarified interesting episodes in the variation of the cytochrome c substitution ...apparent molecular clock anomaly, ...
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Understanding the Overdispersed Molecular Clock
... of molecular evolution at some protein-encoding loci are more irregular than expected under a simple neutral model of molecular ...“overdispersed molecular clock” and is characterized by an ...
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A Compound Poisson Process for Relaxing the Molecular Clock
... The molecular clock hypothesis, although useful in evolutionary biology, is inaccurate in two important de- tails; rates across lineages appear to vary and the substi- tution process deviates significantly ...
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Ancestral Polymorphism of Mhc Class II Genes in Mice: Implications for Balancing Selection and the Mammalian Molecular Clock
... Our simulations have helped rule out the possibility of ancestral polymorphism for neutral genes by focusing on one index of ancestral polymorphism, the number of i[r] ...
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On the Overdispersed Molecular Clock
... T h e possibility that each substitution in a gene changes the degree of selective constraints (neutral space) is analyzed as a time-dependent renewal process. In the[r] ...
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Clusters of Identical New Mutations Can Account for the “Overdispersed” Molecular Clock
... If it is a mutant, then it can be categorized as a single mutation, two or more recurrent independent muta- tions in the same gene (at an extremely unlikely rate of[r] ...
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Circadian Clock Proteins and Immunity
... in clock proteins is lost in synovial fibroblasts cultured from patients with RA (Kouri et ...the molecular clock, as imposed by shift work and airline travel, augments the inflammatory response ...
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Running after the clock
... a molecular clock underlying chick somite ...the molecular clock is operating in several vertebrate models namely chick, mouse, zebrafish, frog and medaka, probably functioning to provide ...
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Testing the Robustness of the Circadian Clock
... Depending on its location, physiology and actively transcribed genes, a cell can take on many identities throughout the body. The Drosophila midgut is comprised of 4 different cell types. Stem cells (ISCs) are the only ...
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Network Time with a Consensus on Clock
... consensus clock which realigns them. The consensus clock functionality receives the local clocks of parties in a proto- col as an ...consensus clock constructed with respect to the input ...consensus ...
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DIGITAL CLOCK USING AT89C51.
... Digital clocks display a numeric representation of time. Two numeric display formats are commonly used on digital clocks. They are: 24-hour notation with hours ranging 00 to 23 and 12 hour notation with AM/PM indicator. ...
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NOTES ON THE THEORY OF QUANTUM CLOCK
... annihilation operators. The next step is to produce an ensemble of these atoms - in an atomic beam or other storage device. Next, illuminate them with radiation from a tunable source that operates near the transition ...
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Is intracellular pH a clock for mitosis?
... through prometaphase and continuing to decline through metaphase when parity between microtubule assembly and disassembly leads to mid-cell chromatid pair oscillation, cul- minating in increased microtubule ...
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