Essentially, the question is whether or not there is universality in the DNA methylation epigenetic code, conceptually similar to the universality of the genetic code, or if DNA methylation is non-universal and specific to every evolutionary unit.
As we saw in Section 2.1, Hull's evolutionary unit argument states that within the purview of evolutionary biology, species must be individuals.
Baquero?s team has rationalized over the concept of ?introgressive descent? to propose that the genetic material of an evolutionary unit propagates into different hosts (hierarchical units) and is replicated within them (Bapteste et al. 2012).
But such an evolutionary unit does not fit within the terms or observables of Darwinian theory.
All approaches therefore indicate that H. m. duboulayi is a distinct evolutionary unit from the other subspecies.
A protein domain, usually a segment of continuous sequence within a protein, is considered the structural, functional, and evolutionary unit of proteins.
We suggest to forego species or morphospecies identification used by ATBI and RBA respectively but rather to tackle the problem at another evolutionary unit, the community level.
Given the brambling's pervasive lack of site fidelity, the evolutionary unit is likely to be very large, possibly comprising the whole regional population.
Similar to the single domain trees, when and how each domain combination was formed can be observed and mapped to domain combination trees, where each combination type is considered a distinct evolutionary unit.
Although the processes of invention, loss and transfer of domain combinations are different from single domains, if each domain combination is considered as individual evolutionary unit, the above analysis still holds.
The evolutionary and ecological success obtained by Porifera may be in part related to this intimate association with microbial symbionts, in accordance to the hologenome theory that considers the host and its microbiota as a single evolutionary unit [4].
