Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2005

  • question_answer
    Whereas the number of chromosomes is reduced to half in first reduction division of meiosis, then what is the need for second mitotic division?

    A)  For the  segregation of replicated chromosomes

    B)  For  equal  distribution of haploid chromosomes

    C)  For the formation of four gametes

    D)  For equal distribution of genes on chromosomes

    Correct Answer: A

    Solution :

    In meiosis-I the actual chromosome number is reduced to half. Therefore, meiosis-I is also known as reductional division or heterotypic division. It results in the formation of two haploid cells from one diploid cell. The second meiosis is required and it is ordinary mitosis because it is now turn of chromatids of the chromosome of haploid sets to segregate. Thus due to division, four haploid daughter cells (all may or may not be gametes) are finally formed.


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