Persistence of such spatially extensive gene pools within glacial refuge areas could account for the relative homogeneity of allele frequencies over large distances following post-glacial dispersal.
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.
The drop in population size led to extensive inbreeding which raised concerns that a small gene pool could harm the gorillas' long-term future, particularly their ability to survive infectious diseases and cope with environmental change.
The agency said that is because the owl population of about 1,200 pairs – most of them on Forest Service lands subject to extensive logging -- is so small it has "an impoverished gene pool". Officials also agreed that owl habitat loss and fragmentation from logging may exacerbate threats posed by climate change, invasive species and development.
Mycobacteriophages or other bacteriophages with a wide host spectrum may play a key role in such transfers, as they display extensive mosaicism, combining viral and bacterial genes in a vast gene pool [32].
Currat & Excoffier [46] demonstrated using a series of genetic simulations that even a small percent of genetic admixture between hunters and farmers would result in an extensive amount of pre-Neolithic contribution to the current European gene pool.
Extensive peri-centromeric regions of very low diversity in the spring gene pool are highlighted in green and low diversity in the winter gene pool in purple.
Sequences were generated from a normalized cDNA pool comprised of multiple tissues and genotypes, promoting extensive gene discovery and a comprehensive survey of allelic variation in the transcriptome.
In meningococci and N. lactamica, extensive genetic diversity, much of it inherited from the common ancestral gene pool, is organised into clonal complexes, each associated with particular alleles at each of the housekeeping gene loci analysed to date.
This implicates the emerging eukaryotic cell as a second, after the primordial gene pool, melting pot of virus evolution, in which extensive mixing and matching of viral and cellular genes molded a new domain of the virus world (Fig. 3).
