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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2005

  • question_answer
    When the chromosome number of n given organism has one additional chromosome in one of the homologous pairs, the condition is known as:

    A)  trisomy

    B)  monosomy

    C)  polyploidy

    D)  nullisomy

    Correct Answer: A

    Solution :

    \[R{{h}^{+}}\]blood group is a genetically dominant trait in human beings. Monosomy-An individual lacking one chromosome of a set (2n- 1). Trisomy-An individual having one extra chromosome of a, set (2n +1). Nullisomy-A cell or organism lacking both members of a given chromosome pair (2n - 2). Polyploidy-An individual having more than two complete sets of chromosomes e.g.,   triploid   (3n),   tctraploid  (4n), penlaploid    (5n),   hexnploid   (611), heptaploid (7n), octoploid (Sn) etc.


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