Sentence examples for origin remains uncertain from inspiring English sources

A number of scholars have visited the site, but its origin remains uncertain.

Asteroid capture is a long-favored theory, but their origin remains uncertain.

As ependymoma's cell of origin remains uncertain, we also thought that most of the gene expression studies have suffered from the lack of specificity of the reference mRNA used.

The timing and location of the dog's origin remains uncertain.

Additional sequences of bacterial LysRS2 genes are likely to shed new light on the evolution of the LysRS2 LGT events for which the origin remains uncertain.

The remaining northern Asian U4 mtDNAs belong to subclades U4a*, U4a1*, U4a1e, U4a1d, U4b1a4, U4b1*, U4d2*, U4d2a, U4b3a, which origin remains uncertain.

However, the evolutionary advantage of additional chromosomes beyond additional replication origins remains uncertain.

However, since there is overlap with the earliest appearance of Castor in North America (6.6 mya to 7.5 mya [12], [28]), the geographical origin of Castor remains uncertain.

However, despite its myogenic phenotype, the origin of RMS remains uncertain; it can arise from salivary glands, the genitourinary tract, and the adipocyte lineage.

At present, however, the indigenous nature of the sterol biomarkers is not fully established (see [ 68] for a discussion of the pros and cons) so that the relevance of these dramatic observations to the origin of eukaryotes remains uncertain.

The origin of the mola remains uncertain.