The study indicates that non-cyanobacteria account for a substantial part of the nifH gene pool in marine surface waters and that these genes are at least occasionally expressed.
Our results also suggested that the domestication of almond trees might not have suffered a substantial reduction in the original gene pool, because extant almond trees appeared as diversified as other wild Prunus species.
The modern-day cultivated sunflower gene pool thus exhibits substantial variation in plant architecture, making it an ideal system to study the genetics of branching.
Studies of nuclear DNA polymorphisms [11], [12], autosomal microsatellite loci [13] and various sets of DNA markers [14] all confirm a substantial contribution of Southwest Asian populations to the European gene pool and report similar SE-NW clines across Europe.
Y chromosome FST values between Malagasy and Indonesians are relatively high (FST > 0.2; Additional file 5: Table S5), mostly driven by the substantial African component of Malagasy (~65% of the paternal gene pool, but only ~30% of mtDNA [ 25, 24]).
Cupriavidus metallidurans strains do display substantial differences in the diversity and size of their mobile gene pool, which may be extensive in some (including the type strain) while marginal in others.
Further Bayesian-clustering applied within each major gene pool identified diffuse genetic discontinuities (minor gene pools displaying substantial introgression) at a latitude between 0 and 2°N in Central Africa for both species, and at a longitude between 5° and 8°E for E. ivorense.
The Virus World, apparently, remained continuous in time, in terms of uninterrupted inheritance of substantial sets of virus-specific genes, since its emergence from the primordial gene pool at the precellular stage of evolution to this day.
Substantial morphological variation for fruit and seed size, shape, color and rind hardness exists in the bottle gourd gene pool [ 8- 10].
