The phrase "a single origin in" is correct and usable in written English.
It can be used when discussing the source or starting point of something, often in contexts like history, culture, or product development.
Example: "The research indicates that the plant species has a single origin in the Amazon rainforest."
Alternatives: "a sole source in" or "a unique origin in".
The modern genetic evidence seems clear that many domestication traits had a single origin in terms of a single controlling mutation.
African rice domestication has a single origin in West Africa (Linares, 2002; Wang et al. 2014) and is associated with a severe genetic bottleneck (Li et al. 2011a, b; Nabholz et al. 2014; Orjuela et al. 2014).
In contrast, the molecular evidence available to date (i.e. mtDNA and nuclear DNA information) supports a single origin in Northeast Asia ca. 15,000 years BP for almost all American populations, followed by local diversification probably with the exception of the Esquimo and Na-Dene groups [12] [14].
We favor a single origin in the Cecidomyiidae.
DNA replication initiates from a single origin in bacteria, whereas multiple origins are utilized in eukaryotes [ 3].
Acacia gall-thrips are a monophyletic group, distinct from other gall-inducing groups in Australia, implying that gall induction had a single origin in this case [ 51].
We can also infer that, because all eastern Atlantic haplotypes apparently have a single origin (monophyly in Fig. 2), they most likely originated from a single colonization event (Fig. 3) on the order of two hundred thousand years ago (based on our trans-isthmian molecular clock estimate of 4.4%/Myr).
Our analyses suggest a single origin of parthenogenesis in Panagrolaimus and provide evidence that P. davidi arrived in Antarctica in the very recent evolutionary past.
In this regard, it has been proposed that a single origin of venom in Squamata, the order of reptiles including lizards and snakes, dates back roughly 200 Mya to the Late Triassic/Early Jurassic period [ 1, 2, 93].
DNA replication in P. aeruginosa occurs bidirectionally, being initiated at a single origin and proceeding in opposite directions around each half of the chromosome until terminating when the replication machineries meet at the approximate midpoint of the chromosome.
Avigad, S. et al. A single origin of phenylketonuria in Yemenite Jews.
