[Statistical characteristics of splicing sites in vertebrates and invertebrates]

Human, rodent, Drosophila and nematode Caernorabditis elegans splicing sites have been analyzed. The estimated strength of the nematode donor sites positively correlates with the length of the adjacent exon. The Drosophila acceptor site strength negatively correlates with the length of the adjacent intron. GC-content of the polypyrimidine tract of the human and rodent acceptor sites and the G/A choice in the third intron position of the human donor sites correlates with the local GC-content of the site neighbourhood.