In Turkey, the Holstein is living out an ancestral role, filling a function its breeding has left behind, and only because it's the only choice.
However, further expression and functional analysis in other platyhelminthes and spiralian lineages are essential to better understand the ancestral role of the EGFR in these organisms.
They placed Neanderthals in their own species, Homo neanderthalensis, and rejected any ancestral role for them in the evolution of modern people, pointing out their "primitiveness" and presumed inferiority (e.g., Boule 1911 1913).
This machinery is related to the eukaryotic ESCRT-III machinery which, while best known for its role in cell sorting, also has been seen to fulfill a role in separation between divided cell, suggesting an ancestral role in cell division.
An ancestral role of Cdc14 in the flagellar stage of eukaryotes is thereby proposed.
Despite many studies of Cdc14, a unified view of its cellular function or ancestral role has not emerged.
The loss of a presumed ancestral role of Vent genes in chordate DV patterning is particularly intriguing.
Interestingly, the radiation-sensitive T. thermophilus encodes a homolog of DdrA (TTC1923), indicating that this protein had an ancestral role that was not directly related to radiation resistance.
However, the known binding of agrin to α-DG in vertebrates seems to be conserved in C. elegans, pointing to an ancestral role of this interaction.
These observations fit with the proposed unifying, and perhaps ancestral, role of Pufs in promoting cell proliferation and repressing differentiation [18].
This leads to our proposal that an ancestral role of Cdc14 was to regulate the function or biogenesis of the flagellar apparatus, an activity that has been maintained in P. infestans.
