Variation in the Nucleolus Organizer Regions (NORs)  in Two Mole Rat Species ( Spalax leucodon and  Spalax ehrenbergi)

Mehmet Doğan GÜLKAÇ

Article Details

Variation in the Nucleolus Organizer Regions (NORs) in Two Mole Rat Species ( Spalax leucodon and Spalax ehrenbergi)

Authors:

Mehmet Doğan GÜLKAÇ

Publisher:

TUBITAK

Journal:

Turkish Journal of Biology 1999 Vol.23 Issue 2, pp.153-158

Document Type:

Article

Publication Date:

1/1999

Document Language:

Turkish

Document ID (Org No.):

2000814282

Frequency:

Bimonthly

eISSN:

1303-6092

pISSN:

1300-0152

Keywords:

Abstract:

 

In this investigation, patterns of variation in the nucleolus organizer regions (NORs) in the  chromosomes of Spalax leucodon and Spalax ehrenbergi were studied. The chromosomal location of  the Ag-NORs was determined in two mole rat species. S. leucodon has 3 pairs of nucleolar  chromosomes, but S. ehrenbergi has only 2 pairs of nucleolar chromosomes in their whole  chromosome sets. In both mole rat species, the chromosomal locations of Ag-NORs were determined  to be on the terminal of the short arms of the subtelocentrics.  The possibilty of Robertsonian translocation and the loss of paracentric NORs in S. ehrenbergi were  discussed from an evolutionary point of view.

 

In this investigation, patterns of variation in the nucleolus organizer regions (NORs) in the  chromosomes of Spalax leucodon and Spalax ehrenbergi were studied. The chromosomal location of  the Ag-NORs was determined in two mole rat species. S. leucodon has 3 pairs of nucleolar  chromosomes, but S. ehrenbergi has only 2 pairs of nucleolar chromosomes in their whole  chromosome sets. In both mole rat species, the chromosomal locations of Ag-NORs were determined  to be on the terminal of the short arms of the subtelocentrics.  The possibilty of Robertsonian translocation and the loss of paracentric NORs in S. ehrenbergi were  discussed from an evolutionary point of view.

Article Details

Variation in the Nucleolus Organizer Regions (NORs) in Two Mole Rat Species ( Spalax leucodon and Spalax ehrenbergi)

Authors:

Mehmet Doğan GÜLKAÇ

Publisher:

TUBITAK

Journal:

Turkish Journal of Biology 1999 Vol.23 Issue 2, pp.153-158

Document Type:

Article

Publication Date:

1/1999

Document Language:

Turkish

Document ID (Org No.):

2000814282

Frequency:

Bimonthly

eISSN:

1303-6092

pISSN:

1300-0152

Nucleolus organizer regions (NORs)

Spalax leucodon

Spalax ehrenbergi

Issues

Article Details

Variation in the Nucleolus Organizer Regions (NORs) in Two Mole Rat Species ( Spalax leucodon and Spalax ehrenbergi)

Authors: Mehmet Doğan GÜLKAÇ

Publisher: TUBITAK

Journal: Turkish Journal of Biology 1999 Vol.23 Issue 2, pp.153-158

Document Type: Article

Publication Date: 1/1999

Document Language: Turkish

Document ID (Org No.): 2000814282

Frequency: Bimonthly

eISSN: 1303-6092

pISSN: 1300-0152

Nucleolus organizer regions (NORs)

Spalax leucodon

Spalax ehrenbergi

Issues

Authors:

Mehmet Doğan GÜLKAÇ

Publisher:

TUBITAK

Journal:

Turkish Journal of Biology 1999 Vol.23 Issue 2, pp.153-158

Document Type:

Article

Publication Date:

1/1999

Document Language:

Turkish

Document ID (Org No.):

2000814282

Frequency:

Bimonthly

eISSN:

1303-6092

pISSN:

1300-0152