Cytogenetic studies of the somatic and germ-line cells in sand rats (Psammomys obesus)

Pen Ming L. Ming, Jacqueline Whang-Peng

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The chromosomes in both somatic and germ-line cells of the sand rat (Psammomys obesus) were studied. The diploid number of chromosomes was 48. The autosomes consisted of 4 pairs of large metacentric chromosomes, 10 pairs of medium to small metacentric and submetacentric chromosomes and 9 pairs of telocentric chromosomes. The X chromosomes in both sexes were the largest of the entire complement. The Y chromosome was a mediumsized metacentric chromosome. The two X chromosomes in the female cells were similar in size and morphology but differed in the DNA replication pattern. Studies of the meiotic chromosomes in the male germ-line cells revealed 23 autosome bivalents and the sex chromosomes either as an XY bivalent or X and Y univalents.

Original languageEnglish
Pages (from-to)361-365
Number of pages5
Issue number3
Publication statusPublished - Jun 1 1970
Externally publishedYes


  • autoradiography
  • cytogenetics
  • diabetes
  • karyotype
  • meiotic cromosomes
  • mitotic chromosomes
  • Psammomys obesus
  • Sand rat

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism


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