Allopatric populations in the initial stages of divergence, therefore, can provide valuable opportunities to study the onset of reproductive barriers and fertile grounds for testing hypotheses concerning the roles of environmental adaptation (divergent vs. parallel natural selection), sexual selection and random genetic divergence in generating reproductive barriers among populations.
Inseparable, but parallel.
These divergent findings parallel the complexitiy of the role of CREB in stress.
This data allowed us to characterize the genomic neighborhood of each transcript, in terms of distance to its upstream partner in bp, orientation of this upstream partner (which can be divergent or parallel).
However, our genetic interaction studies presented here, in conjunction with our previous evidence 19, support the view that HtrA2 acts downstream of PINK1 in a divergent pathway parallel to Parkin.
Genes in a genome can be transcribed in one of two directions and therefore pairs of genes can be orientated in one of three alternative combinations; divergent transcription, parallel transcription or convergent transcription.
The tissue comprising the tube is hyaline, and made of divergent to nearly parallel hyphae that are 3 5 μm wide.
Although evolution is primarily divergent, parallel, convergent, and reversing changes in independently evolving lineages, collectively known as homoplasy, are not uncommon [ 1].
To test whether the gene directions of neighboring pairs had an effect on co-modification, we assigned the immediate neighboring gene pairs to divergent, parallel or convergent group according to their transcribed directions.
However, the finding of Pax6 in all bilaterian phyla argues strongly for a monophyletic origin of the various eye types and subsequent divergent, parallel, or convergent evolution (see below).
