Each polymorphic (polymorphic) site was considered an independent unit of variation in the analysis [ 71].
For instance, measurements taken across experimental units over time are influenced by 'between time' and 'between unit' components of variation.
Single-unit activity is irregular; the mean of the single unit coefficients of variation of the interspike intervals is >0.8.
Because these QTL point to regulatory polymorphisms that are the underlying units of heritable variation in transcript abundance, understanding the forces governing their evolution can provide detailed insights into gene expression diversity within populations and divergence between species.
A similar trend was seen with the pH values with large variations in the beginning of the experiment of more than three pH units to variations of less than one pH unit after three months storage.
Inaccuracy can result from lack of measurements, unit-to-unit variation, and variation during normal operation.
Since the results reported for the various distance metrics in Table 1A have different units and limits of variation, to allow a direct comparison they are normalized to a common scale by using z-scores to attain zero mean and unit variance normalized results (i.e., standard variables).
The study, co-authored by Stanley J. Ulijaszek, director of the Unit of Biocultural Variation and Obesity at the Institute of Social and Cultural Anthropology at the University of Oxford, and Emily E. Ventura, a research associate at the Childhood Obesity Research Center at U.S.C., was scheduled for publication Tuesday in the journal Global Public Health.
Although preliminary analysis examined data from each year or round, these were pooled for the final analysis and survey round was treated as the unit of temporal variation.
However, the fundamental unit of heritable variation in transcript abundance is the underlying regulatory allele, and as a result it is necessary to understand gene expression evolution at the level of DNA sequence variation.
