Allen's rule
Channel: Dipbiology
Date: 2020-08-19

This video deals with Allen's rule, an important ecogeographical concept and it is extension of Bergmann's rule and help us understand why warm-blooded animal(mammals) living in colder climates have short or smaller appendages like legs,tail,ears in compared  with populations of same species or race living in warmer climatic region and how these morphological changes can provide them adaptive advantage to conserve heat in cold condition which is vital for their metabolic activity. 
This video is useful in different courses like B.Sc, M.Sc,Higher secondary (Biology) and also during preparation of examination like CSIR NET, DBT JRF, GATE-Life science, ICAR NET, UGC SET, NTA NEET Biology, UPSC, TPSC ,C-TET etc.
To learn more about different concept of ecological principles check out other videos:
1.Ecological hierarchy/Level of organization
https://www.youtube.com/watch?v=zIkKZn1FDeg&t=37s
2.Autecology and Synecology
https://www.youtube.com/watch?v=HINHdacf_qc&t=54s
3.Environment (Abiotic and biotic factors)
https://www.youtube.com/watch?v=CV4nSYdZnx4
4.Gloger’s rule
https://www.youtube.com/watch?v=9EcwO0kTles
5. Bergmann’s rule
https://www.youtube.com/watch?v=isUxNj6eMzc