The various exons in the light and heavy chains of immunoglobulin genes correspond with the functional domains of the protein. Discuss how this could have arisen during evolution

What will be an ideal response?


Ans: According to the "introns early" model, exons encoding protein domains existed in a "sea" of introns, and through recombination, new combinations of exons to generate more complex proteins were created.

Biology & Microbiology

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The mass extinction at the end of the Cretaceous period was likely the result of:

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