The phrase "and are often exclusively" is correct and usable in written English.
It can be used to describe situations or conditions that are typically limited to a specific group or category.
Example: "These species are found in isolated environments and are often exclusively adapted to their unique habitats."
Alternatives: "and are frequently limited to" or "and are typically confined to".
Although bills to remove the flag and add the King holiday have passed the State Senate in the past, they have always died in the House, where districts are smaller and constituencies are often exclusively white or black.
Television contracts for tour events are often exclusively for singles, and networks rarely choose to show doubles matches while singles is being played at Grand Slam events.
Outside of their native range, C. mutica are often exclusively synanthropic, being found in large numbers in and around areas of human activity.
Medicine rites are often exclusively for female or male members of a society, but dances for hunting or agriculture admit men, women, and children.
Phylogeographic studies are often exclusively conducted by geneticists, but the most suitable genetic methods available for studying adaptation require complete genome analyses and are only feasible for economically important or charistmatic species [ 37].
As a consequence, only few physicians, specialized and trained in pelvic pain disorders, can easily recognize what the etiology of pelvic pain is, and the treatment is often exclusively symptomatic, frequently with less efficacy.
Puncta in 2UIM ataxin-3 expressing cells generally exhibited a nuclear or nucleocytoplasmic distribution, whereas 3UIM and UIM3-mutant puncta were often exclusively cytoplasmic.
In the scientific literature and in educational and political praxis, the concept of Educational Governance is often exclusively related to institutions of formal learning such as schools or educational training.
From a long-term perspective, an improvement of seasonal forecasting, which is often exclusively based on climatology, could provide a new capability for the management of energy resources in a time scale of just a few months.
