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Why are the small numbers of surviving t...

Why are the small numbers of surviving tigers a cause of worry from the point of view of genetics?

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A small number of surviving t​i​ger are a cause of worry from the point of genetics because these tigers carry genes which have made them adopt do the particular environment during the long process of evolution. If these tigers become extinct then the genes W responsible for survival would also become extinct and would not be able to contribute in the survival of future generations.
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