Scientists report first genome sequence of frog: Genome of Xenopus tropicalis will advance frog genetics

Because of its large eggs, Xenopus laevis -- the African clawed frog -- has become a popular model for studying embryo development and cell biology. It's smaller cousin, X. tropicalis, is now gaining converts, however, because, with its diploid rather than polyploidy genome, it is easier to insert or block genes in order to determine their function. The X. tropicalis genome is now the first amphibian genome to be sequenced.

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