Evolution

Advertisements

Topics

Notes

Evolution:

  • “Evolution is a change in the heritable characteristics of biological populations over successive generations. Evolutionary process give rise to biodiversity at every level of biological organization, including the levels of biodiversity at every level of biological organization, including the levels of species, individual organisms, and molecules.”  
  • The evolution term was introduced by Herbert Spencer. 
  • It can be best explained by Darwin's concept of 'Descent with modification. 
  • This is the story of the origin of life and the evolution of life forms or biodiversity on planet earth in the context of the evolution of earth and against the background of the evolution of the universe itself. 
  • Example:  Peppered moth initially had light coloured which was darkened after Industrial Revolution, due to population. This mutation occurred because light-coloured moths were easily seen by birds, therefore, darkening of them helped in surviving from birds. 
If you would like to contribute notes or other learning material, please submit them using the button below.

Shaalaa.com | Questions

Shaalaa.com


Next video


Shaalaa.com


Questions [00:09:49]
S
Series: 1
0%


Advertisements
Share
Notifications



      Forgot password?
Use app×