Such neutral clonal turnover is analogous to the maintenance of neutral allelic variation under mutation-drift equilibrium.
This model is analogous to the "binding site turnover" model that has been proposed to explain the rapid gain or loss of transcription factor binding sites (Doniger and Fay 2007; Zheng et al. 2011).
This turnover rate is quantitatively analogous to ~ 25 mg Fe/d per 70 kg in iron-adequate humans.
Let us designate τa the characteristic time of H3 histone turnover at active chromatin sites, τi the analogous time for inactive chromatin, and τr the characteristic time of cell replication.
This is intriguing because trabecular bone has a much faster turnover as compared to cortical bone, a relationship analogous to the contrasting lability between medullary- and cortical bone in chicken.
The possibility that the Ser → Ala mutant of AT1 has residual activity is ruled out by our previous observation that the analogous mutation in module 2 of DEBS yields a protein with undetectable turnover capacity.
Therefore, the turnover of items for resale in the art market is not analogous to the timing of resale in other markets.
At high pressures, the activation energy and turnover frequency for the CO oxidation reaction on the model catalysts compare favorable with analogous results from single crystal and high-surface-area catalysts.
In most cases, however, what is hoped for is an efficiency in terms of turnover rates, yields, and stereoselectivities which is very close to that of the parent, non-dendritic analogous catalysts.
Sometimes this turnover is coupled to adaptive changes in lifestyle, whereas other changes in regulation may be neutral, analogous to the genetic drift that happens at the sequence level (Tsankov et al., 2011; Baker et al., 2012).
