Ambystoma mexicanum

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The Mexican axolotl, a widely used laboratory species. The urodele for which the most genetic information is available. It was in the nuclei of oocytes of this species that the giant lampbrush chromosomes (q.v.) were first observed. Ambystoma has 14 pairs of chromosomes, and a genome size of about 35 gbp of DNA. It is one of the few vertebrates able to regenerate entire body structures. See Classification, Animalia, Chordata, Vertebrata, Amphibia, Urodela; Chronology, 1882, Flemming; neoteny, regeneration.

Subjects: Genetics and Genomics.

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