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प्रश्न
Why are the small numbers of surviving tigers a cause of worry from the point of view of genetics?
उत्तर १
The small number of members in a population of tigers do not allow large number of variation to occur which are essential to survival of the species. A deadly disease or calamity may cause death of all the tigers. The small number of tiger also indicates that existing tiger variants are not well adopted to the existing environment and may extinct soon.
उत्तर २
The small numbers of surviving tigers is a cause for worry from the point of view of genetics, because if all tigers perish and become extinct, their genes will be lost forever.
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संबंधित प्रश्न
Explain the concept ‘survival of the fittest’.
Give the respective scientific terms used for studying the mechanism by which variations are created and inherited
What are the different ways in which individuals with a particular trait may increase in a population?
Give the respective scientific terms used for studying the development of new type of organisms from the existing ones.
Fill in the following blank with suitable word :
The human forelimb and bat's forelimb are an example of .......... organs whereas an insect's wing and a bat's wing are an example of ........... organs.
According to scientists, aves have evolved from :
(a) mammals
(b) amphibians
(c) reptiles
(d) arthropods
Explain the following :
(a) Speciation
(b) Natural Selection
Short answer question.
What is disrruptive selection?
Name any three types of premating isolating mechanisms.
Genetic drift is change of:
