Can alternate splicing of exons enable a structural gene to code for several iso-proteins from one and the same gene? Give reasons.
Answers
The alternate splicing of exons is sex-specific, tissue-specific, and even developmental stage-specific. The alternate splicing helps in encoding a single gene for several iso-proteins. If this splicing is absent there would have been new genes for every protein or isoprotein.
Answer:
Functional mRN A 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 every protein/isoprotein. Such an extravagancy has been avoided in natural phenomena by way of alternative splicing.