Based on the observation that traits often lacked variability, Waddington [1] proposed the notion of "canalization" as an ability of a genotype to produce relatively constant phenotypes across different environments and genetic backgrounds.
Genes that showed expression levels of 100 across all 24 samples, and therefore lacked variability, were then removed from the analysis.
These tests could only be performed for populations containing two or more haplotypes, thus many Mimus populations comprising single haplotypes could not be tested because they lacked variability (Hd and Pi = 0, Table 2).
It is obvious that in the case of υ = 0 or μ = 0 the entity can only replicate exactly (that is, it is potentially a replicator, but actually is lacking variability, perhaps due to the environment).
Two measures (availability of electricity within the home, and child's access to television) were dropped from analyses because they lacked variability (90% positive) and because they contributed minimally to only one or another outcome.
It is also possible that the lack of variability in the weight variable within camps may have impacted our ability to find an effect of weight on lesion outcome.
Unfortunately, although Greece again stands out, it is very hard to use this variable, due to its total lack of variability.
Use of the highest CPI score as the outcome variable to construct the regression model is not feasible due to a lack of variability of data.
He risks the displeasure of the industry that commissioned him by highlighting one "surprising feature of the 2015 election", namely "the lack of variability across the polls".
Preliminary descriptive analyses led to the exclusion of four items (A45, A94, A101, A102) for lack of variability.
