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).
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.
The unexpected low test-retest reliability for the frequency of medication taking measure (days missed of prescribed diabetes medications during the past week) could be explained by the lack variability due to the clinical trial treatment context.
These learning environments are indeed safe, but lack the variability required to satisfy the athletic developmental needs of child, such as capacities to make decisions quickly and land safely during force landings, common in team sports [31].
The large number of items that lacked environmental variability indicates a relatively uniform environment in terms of characteristics, which the literature indicates might be used to differentiate walkability; however, the 18 reliable items can potentially be used to differentiate walkability.
The few unique identified cis-elements (Table 2) are characterized by longer sequences (5 to 10 bases), and usually lacking any nucleotide variability.
For those lacking guidance, the variability of HBPM readings led them to regard and disregard HBPM readings according to their own standard.
In particular, information is lacking to constrain spatial variability associated with GHG emissions (CH4, CO2, and N2O).
