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?

Answer:

                  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.