BCECE Medical BCECE Medical Solved Papers-2007

  • question_answer
    The genes, which remain confined to differential region of Y chromosome, are

    A)  autosomal genes

    B)  holandric genes

    C)  sex linked genes

    D)  mutant genes

    Correct Answer: B

    Solution :

    The genes which remain confined to differential region of Y-chromosome are called holandric genes. The holandric genes are localized in the non-homologous section of Y-chromosome. These genes are transmitted from father to son only. The genes which remain confined on the autosomes are called autosomal genes. The autosomes are chromosome which are not associated with sex. The genes which are found on sex-chromosome ie, X and Y are called sex-linked   genes. The genes on X-chromosomes of male individual will always go to daughter while gene on X-chromosome from female individual will be distributed between daughters and sons. Mutation is spontaneous permanent change in a gene or chromosome which usually produces a detectable effect in the concerned organism. This non-wild gene is called mutant gene.


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