The phrase "an initial origin of" is correct and usable in written English.
It can be used when discussing the starting point or source of something, particularly in academic or analytical contexts.
Example: "The researchers aimed to identify an initial origin of the species in order to understand its evolutionary history."
Alternatives: "a primary source of" or "a preliminary cause of".
This appears to be the initial origin of the "A"–"F" system familiar to most faculty members today, albeit including an "E" grade.
Such gene exchange between Archaea and primitive Bacteria has certainly taken place [ 36] and makes absolute statements about the initial origin of genes difficult to make.
The role of ROS as the initial origin of aging is still controversial [ 26, 33], but it is clear that the accumulation of high levels of ROS during aging can damage tissues, cellular components, and biomolecules.
Regardless of the initial origin of the parasites, they can be transmitted efficiently among rhesus monkeys, as supported by the higher occurrence of Cryptosporidium spp., G. duodenalis, and E. bieneusi at places with higher animal density.
Populations near to a centre of initial origin are expected to maintain more ancestral variation and to show higher haplotypic and nucleotide diversity than populations derived through subsequent migration colonization [ 10].
The similarities of H. naledi to earlier members of Homo, including H. habilis, H. rudolfensis, and H. erectus, suggest that this species may be rooted within the initial origin and diversification of our genus.
To describe global air travel patterns to Luanda, Angola, we analysed worldwide passenger-level flight itinerary data from the International Air Transport Association between January and May 2012, taking into consideration all traveller flight connections (direct and indirect) to determine the initial origin and final destination of each traveller.
Regardless of their initial origin, high-GC3 genes in recombining species possessed a self-maintaining mechanism that over time could only increase their drift towards even higher GC3 values.
Cheyne-Stokes respiration (CSR) is a special form of this disorder, mixed sleep apnoea (MSA), in which there is an initial cessation of breathing of central origin with a collapse of the soft parts of the pharynx, followed by a resumption of function of the respiratory centre, while the upper airway is collapsed.
For instance, if you look up coulibiac in the 1938 edition of Larousse Gastronomique, you will find plenty, including an initial account of the dish's origins, a warm pastry with fish inside, an acknowledgment of its Russianness, and a grainy photograph of a loaf-like entity, twelve steam slits on top, sitting bluntly on a platter, emanating rustic veracity.
