RAS source details
Libertini, A. & I. Lazzaretto. (1992). Location of nucleolus organizer regions (NORs) in karyotypes of three sibling species of Tisbe of the gracilis group (Copepoda, Harpacticoida). Atti della Accademia Nazionale dei Lincei, Rendiconti dell' Classe di Scienze Fisiche Matematiche e Naturali 3(1):67-73.
99671
Libertini, A. & I. Lazzaretto
1992
Location of nucleolus organizer regions (NORs) in karyotypes of three sibling species of Tisbe of the gracilis group (Copepoda, Harpacticoida).
Atti della Accademia Nazionale dei Lincei, Rendiconti dell' Classe di Scienze Fisiche Matematiche e Naturali
3(1):67-73.
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A karyotypical analysis carried out on three sibling species of thegracilis group of the genusTisbe showed that all species possess three NORs. In each species these regions exhibit a peculiar location which suggests that the reduction of chromosome number, by progressive Robertsonian fusion, from2n = 22 (Tisbe cucumariae) to2n= 16 (T.biminiensis) or2n = 10 (T.gracilis), involved the chromosomes carrying NORs without modifying the NORs number.
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Tisbe gracilis (Scott T., 1895) (additional source)
