Exact(4)
Providing evidence for a genetic basis of morphological divergence between rapidly evolving populations that lack divergence in selectively neutral DNA will not only inform conservation efforts but also provide insight into the mechanisms of the early processes of speciation.
What makes this result noteworthy is the lack divergence between understandings at the three levels.
Unfortunately, similar comparisons of IGS length and divergence time are not possible for many of the taxa examined in this study because we lack divergence time estimates.
Before comparing median values of Ka and Ks between different groups of genes, we removed data points of 70 ribosomal genes (that are extremely slow-evolving genes that lack divergence information), 228 sex-chromosomal genes (that are under different strength of selection compared with autosomal genes), and 1,997 pseudogenes listed in http://Pseudogene.org/ (Karro et al. 2007).
Similar(56)
However, lack of divergence seems highly unlikely, because rates of divergence at Mpi and Ci are approximately three times faster than rates at CoI/ CoII (Tables 4, 5, 6) as estimated here, and when tested among more distantly related species of Heliconius [ 24].
This ANS clading seems to reflect a general lack of divergence.
Nevertheless, MD PSO is still susceptible to premature convergence due to lack of divergence.
Of the other three cases, two are verified unstable, as expected, and one remains stable, despite the lack of divergence preservation.
As another example of this lack of divergence, we see a grouping of monocot grasses clading with the fern ANS (Figure 4A,B).
While the lack of divergence among Mississippi bay systems supports genetic management as a single unit, further work is needed to determine the spatial scale of natural dispersal and assess the degree of local adaptation of regional populations.
The lack of divergence in corolla-tube depth with these parameter values cannot be attributed to a delayed response.
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