Sentences with phrase «isolation from other populations»

Natural breeds rose through time in response to a particular environment and in isolation from other populations of the species.

Not exact matches

This doesn't change for thousands of years as these populations remain in apparent isolation in the shelter of the mountains — possibly cut off from other major ancestral populations for as long as 15,000 years — until migrations began again as the Glacial Maximum recedes, and the Yamnaya culture ultimately emerges.

But new research shows the cuddly bird and the powerful feline share an unfortunate fate: Though their numbers have stabilized or are even rising, some populations are suffering from profound genetic isolation or loss of genetic diversity — enough in some cases to leave them deeply vulnerable to new diseases and other threats.

They were using directive instruction modes designed to impart information and learning within a specific topic area, often in isolation from other topic areas, and they were having inconsistent student achievement results with inner - city middle school populations.

EMERGING School Library leaders act as agents of improvement to promote some of the learners» academic and / or professional success and well - being through an inquiry - based approach, utilizing a variety of instructional strategies to meet a diverse learning population; however, in isolation from most other teachers.