The gravitational attraction of the Moon and the centrifugal force of this rotation are exactly balanced at the centre of the Earth.
However, the haplotype-specific phasing analysis described above confirms that the allele fraction at "diploid" regions of the chromosome is exactly balanced at 0.5.
The dotted line in each graph in Figure 7 are for completely equal usage of all codons, when mutation bias to A/T is exactly balanced by selection to G/C; thus one interpretation is that genes to the left of the dotted lines are dominated by mutation while those to the right are dominated by selection.
In such a scenario, if cell loss from a given compartment due to export is exactly balanced by the gain from cell division (ε = 0.5), we come to the biologically implausible situation where cells from the upstream compartment are not needed at all.
During steady-state unloaded shortening, the negative cross-bridge forces that counteract sliding are exactly balanced by the positive forces due to cross-bridges that undergo their power stroke.
The order of needle stimulation was exactly balanced, with half of the sample randomized to receive true before sham acupuncture and half randomized to receive treatment in the reverse order.
But the Proton equipment would also be connected to the local grid: upon receiving a signal, it would pull more current from the grid, or less, to keep supply and demand exactly balanced.
In the case of pure drift, these factors exactly cancel one another out – a higher probability of moving in one direction is exactly balanced by a larger step size in the other direction – leading to a net expected change of zero (in some special cases, such as two alleles at equal frequency, both the probability and step size are the same in both directions).
According to this model, some clones expand by chance through symmetrical self-renewal (in which a stem cell divides to produce two daughter stem cells), and this is exactly balanced by the loss of other clones as a result of stem cells undergoing terminal differentiation.
If two reactants are involved and if it is desirable to operate the process without any excess of reactant, it is necessary to manage the fresh feed streams so that the stoichiometry is exactly balanced.
