variation in biology class 10

 Hello guys in this video we will discuss about , Do organism create its exact copies of themself so without wasting your time let get started --



Organism looks similar of body designs to be similar , the blue print for these design should be similar .     The blue prints of life is DNA molecule that contain information for inhitance of feature from patents to next generation . The DNA in the cell - necules is the information source for making protein.      If the information is different different protein will be made .    Different protein will eventually lead to different budding design .      Thus the basic events in reproduction is the creation of the DNA copies .  The power make the exact copies of the organism is possible due to the pressunce of DNA.      The process of copying the DNA will have some variation each time as a result , the DNA copy generated will be similar But may not be identical to the original.       Thus surviving cell are similar to , but subtotaly different from each other . This in build tendency for variation during reproduction is the basis of evolution.

So after , discuss about does organism reproduce there exact copies we will discuss about importance of variation so let get start.



Importance of variation -  Variation is useful for the survival of species over time .      If some variation to be present in a few individual in a population , there could be some chance for them to survive .      example -- If there were a population of bacteria living in the temperature were to ne increase by global warming , most of these bacteria would die , but the few variant resetent to heat would survive and grow further .

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By - SATYAM MISHRA 


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