Sentence examples for variations were absent from inspiring English sources

The two variations were absent in 144 normal and ethnicity-matched controls.

But for PITX3 and HSF4 genes although variations were absent in 50 ethnically matched control samples, there is no segregation between these detected polymorphisms and the studied phenotype (association between congenital cataract, mental retardation and microcephaly) in family F1.

In a study comparing 64 Japanese centenarians to 61 patients with Parkinson's disease (25), Tanaka (25) found a by-far-greater frequency of deleterious mitochondrial variants and a much greater variety of amino acid replacements among Parkinson's disease patients; in contrast, such variations were absent in centenarians.

Unlike AtIpk1 and MmIpk1, however, metal-binding sites for structural stabilization and conformational variations are absent in CnIpk1.

If such nongenetic variation were absent, then in any given village, nearly all pairs of cases occurring among unrelated persons in the same village would be in different households.

Elevated CYP1A2 expression is not persistent, as site-specific variation was absent in juveniles originating from field-collected eggs but reared under lab conditions.

However, selection does require some variation and Schwartz (1999) suggests that a continuing usefulness supplement is needed, which kicks in if variation is absent for a time.

In contrast to adult tissues, circadian variation was absent for all genes at all of the embryonic ages examined in either whole embryos or individual tissues.

Genotypic variation was absent in all populations (i.e., each population consisted of a single multilocus genotype (MLG) or "clone") and the genetic composition of only one population completely changed across years.

New mutations become important when standing genetic variation is absent or depleted.

No signs of ambiguity were found and intraspecific variation was absent or very low (0 1%), indicating that intra-individual variation is absent for 28S D1 (which is a multiple copy gene).