I cromosomi di alcuniPipidae (Amphibia Salientia) |
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Authors: | A Morescalchi |
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Institution: | (1) Istituto di Istologia ed Embriologia dell'Università di Napoli, Italia |
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Abstract: | Summary The karyotype of the African PipidHymenochirus boettgeri (2n=24, all meta- or submetacentric chromosomes) is different from the one of the African PipidXenopus laevis (2n=36). The karyotype of the American PipidPipa (Protopipa)parva (2n=30, all acrocentric chromosomes) is very primitive and different from the karyotypes of the African Pipids and from that ofPipa pipa; the male meiotic chromosomes ofP. parva, usually with 1 procentric chiasma, show a clear difference from the male bivalents of the other Pipids, all with 2 terminal chiasmata. |
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