Sentence examples for been maintained by selection from inspiring English sources

Thus, if the duplication has been maintained by selection, control of replication may not be the singular or primary selective driving force.

Instead, it appears that the genes which persisted for 275 MY have been maintained by selection.

The most parsimonious explanation is therefore that the over-representation of HI genes on this chromosome has been maintained by selection.

Nucleotide conservation patterns in gltI and GcvB argue that this unusual RNA interaction has been maintained by selection and that the gltI-SroC-GcvB axis is functional in many enterobacterial species (Supplementary Fig S1).

The two urodele TLR09 paralogs have been maintained by selection for at least tens of millions of years, so possibly these genes specialized in recognition of various bacterial DNA PAMPs.

Sequencing of Major Sperm Protein, a gamete-specific gene, from both meiotic and ameiotic species reveals no increase in evolutionary rate nor change in substitution pattern in the apomictic taxa, indicating that the locus has been maintained by selection.

Despite the widespread occurrence of multiple ornaments, and the theoretical interest in how they are maintained by selection, there have been few experimental studies of the phenomenon.

Two, multiple copies may prove to be beneficial such that their repetition is maintained by selection thereafter ("isofunctionalization"; Oakley et al. 2006).

The dearth of pseudogenes suggests that sequence clusters are maintained by selection for high gene-copy number, perhaps due to selection for high expression rates.

It is therefore reasonable to conclude that the property is maintained by selection pressure.

Stable cell lines were maintained by selection with 5 µg/ml G418.