12th Class Biology Molecular basis of inheritance

  • question_answer 75)   Do you think that the alternate splicing of exons may enable a structural gene to code for several is proteins from one and the same gene? If yes how? If not, why so?


                      Functional mRNA of structural genes need not always include all of its exons. This alternate splicing of exons is sex-specific, tissue-specific and even developmental stage-specific, By such alternate splicing of exons, a single gene may encode for several isoproteins and/or proteins of similar class. In absence of such a kind of splicing, there should have been new genes for everyprotein/isoprotein. Such an extravagancy has been avoided in natural phenomena by way of alternate splicing.

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