NEET Biology Organisms and population Question Bank Critical Thinking Questions

  • question_answer
    Which of the following is not true for a species [CBSE PMT 2005]

    A) Members of a species can interbreed

    B) Gene flow does not occur between the populations of a species

    C) Each species is reproductively isolated from every other species

    D) Variations occur among members of a species

    Correct Answer: B

    Solution :

    Gene flow means the spread of genes through populations as affected by movements of individual and their propagules e.g., spores, seeds etc. Gene flow ensures that all populations of a given species share a common gene pool i.e., it reduces difference between populations. The interruption of gene flow between populations is a pre-requisite for the formation of new species.


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