Cytogenetics Department, Sullivan Nicolaides Pathology, Bowen Hills, Queensland, Australia,
Australian Rivers Institute, Griffith University Gold Coast, Southport, Queensland, Australia.
Cytogenet Genome Res. 2020;160(11-12):698-703. doi: 10.1159/000511730. Epub 2020 Nov 18.
The karyotype of the Odontocete whale, Mesoplodon densirostris, has not been previously reported. The chromosome number is determined to be 2n = 42, and the karyotype is presented using G-, C-, and nucleolar organizer region (NOR) banding. The findings include NOR regions on 2 chromosomes, regions of heterochromatic variation, a large block of heterochromatin on the X chromosome, and a relatively large Y chromosome. The karyotype is compared to published karyograms of 2 other species of Mesoplodon.
齿鲸的染色体核型此前尚未有报道。其染色体数目被确定为 2n=42，G 带、C 带和核仁组织区（NOR）带型被用来展示染色体核型。研究结果包括两条染色体上的 NOR 区域、异染色质变异区域、X 染色体上的大片段异染色质和相对较大的 Y 染色体。将该核型与另外两种齿鲸的已发表核型图谱进行了比较。
