question about gene evolution

sb9e sb9e at faraday.clas.virginia.edu
Wed Mar 2 13:59:36 EST 1994

     I have a couple of probably naive questions about the evolution of
gene structure in animals. Many homologous genes contain more exons and
thus are more fragmented in higher mammals than in lower animals.
First, is this a general tendency? Second, is this considered a result
of fragmentation of the gene during evolution or rather a structural
simplification in lower organisms? 
     I would be very grateful for any suggestion or indication of
references on this subject. Thank you,

                            Serge Birman
                            sb9e at virginia.edu

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