Nevertheless, regardless of any past geographic context, our results demonstrate that ecologically-based divergent selection is a viable cause of divergence in scleractinian corals.
One possibility is that competition was the main cause of divergence in habitat between limnetics and benthics, and that the habitat differences subsequently led to divergence in defensive traits.
It seems the variation of length at the end of the exons was due to indel loss or gain, a frequent cause of divergence [67].
Increasing the on-rate and off-rate of the indicator while maintaining the same Kd permitted better tracking of the actual free calcium, indicating that the primary cause of divergence was the low on-rate of the indicator.
In any event, whatever the cause of divergence between Dan06D and Dan06ABC, the most important point is that these laboratory lines should henceforth not be lumped into one "clonal" stock.
We evaluated the extent and cause of divergence in phenotype among our five populations using a model selection approach.
As an example, Figure 7d shows a region in chromosome 1 from another G2 I6 mouse where the propagated error is the main cause of divergence.
An alternative cause of divergence of songs in wedge-tailed sabrewings is reinforcement selection against maladaptive hybridization, being song a sexually selected mechanism to maintain reproductive isolation in case of secondary contact [ 51].
(Female hybrids between Panama and French Guiana H. melpomene are also sterile, but in only one direction of the cross [ 40], so that mitochondrial transfer should still be possible between the geographic races, although here geography is probably the cause of divergence).
