Sentence examples for been under strong selective from inspiring English sources
They are known to have been under strong selective pressure as brain size increased from monkeys to man, and the chances seem "pretty good" that the new alleles are a continuation of that process, Dr. Lahn said.
The comparison revealed that in sport-hunting dogs, 59 genes have been under strong selective pressure resulting in particular variations associated with athleticism being passed down through successive generations.
Taking into account the high heterozygosity of grapevine this result suggests that domesticated transposons fulfill important cellular roles and have been under strong selective pressure for their maintenance.
Such findings suggest that muscle miRNAs examined have been under strong selective constraint throughout the evolution of vertebrates, thereby reflecting an acquirement of primordial functions on muscle biology.
From a population genetics standpoint, some alleles conferring a higher risk of inflammatory and autoimmune diseases have been shown to have been under strong selective pressure in the past (Barreiro and Quintana-Murci 2010).
Analyses of the sequence of the whole gene in a multi-ethnic panel of individuals have shown that DC-SIGN has been under strong selective constraints, preventing the accumulation of aminoacid changes over time.
These genes are supposed to be under strong selective pressure (purifying selection) due to their important role in the timely removal of glutamate at the synapse.
Consequently, all 7 genes are under strong selective constraint, which excludes the possibility of past episodes of positive selection on these genes.
In addition, the greater distance of LCRs to exons is also expected to result from relaxation of selection as previous studies reported sequences near introns to be under strong selective constraints due to the presence of splicing regulatory elements and to the deleterious effects of the disruption of these elements (Pagani et al. 2005; Parmley et al. 2006; Warnecke and Hurst 2007).
For example, populations living in equatorial climates were under strong selective pressure that favoured dark skin colour to protect against extreme sun exposure, thereby decreasing the deleterious health effects caused by sunburn and skin cancer.
