Biology (NTSE/Olympiad)  

7. Heredity & Evolution

Significance Of Variations

Significance Of Variations
Some of the neutral variations function as preadaptation to changing environment. For example, heat wave may kill most bacteria except a few which have a pre-adaptation or variation to tolerate high temperature.
Evolution :
Variations are raw materials for evolutionary processes. Picking up suitable variants by nature or environment forms the basis of evolution.
Struggle for Existence :
Useful variation provide advantage to the individuals in the struggle for existence and hence survival in nature.
Individuality :
Variations provide a distinct identity to each and every individual.
Artificial Selection :
Picking up of certain variations by breeders have resulted in development of a number of breeds and varieties of domesticated plants and animals

If you want to give information about online courses to other students, then share it with more and more on Facebook, Twitter, Google Plus. The more the shares will be, the more students will benefit. The share buttons are given below for your convenience.

NTSE Biology (Class X)

NTSE Biology (Class IX)


NTSE Physics Course (Class 9 & 10)

NTSE Chemistry Course (Class 9 & 10)

NTSE Geography Course (Class 9 & 10)

NTSE Biology Course (Class 9 & 10)

NTSE Democratic Politics Course (Class 9 & 10)

NTSE Economics Course (Class 9 & 10)

NTSE History Course (Class 9 & 10)

NTSE Mathematics Course (Class 9 & 10)