Limits...
Comparison of the chromosome banding pattern in the 2n = 56 cytotypes of Nannospalax leucodon and N. xanthodon from Turkey.

Arslan A, Arısoy A, Zima J - ScientificWorldJournal (2014)

Bottom Line: The amount of C-heterochromatin was larger in the Thrace sample of N. leucodon compared to the Anatolian population of N. xanthodon.The active NOR sites were recorded on five autosomal pairs in N. leucodon, whereas only three or four pairs bearing NOR were observed in N. xanthodon.Differences between the studied populations were quantified in the analysis of the distribution pattern of the C-positive bands and the AgNOR sites in individual chromosomes which indicated a basal position of the Thrace sample of N. leucodon and its divergence from other studied populations.

View Article: PubMed Central - PubMed

Affiliation: Department of Biology, Faculty of Science, Selçuk University, 42031 Konya, Turkey.

ABSTRACT
We present the karyotype characteristics of five cytotypes of mole rats (Nannospalax) with 56 chromosomes revealed by the C-banding and AgNOR staining analyses. We attempt to investigate if the specific distinction between the populations from Thrace (N. leucodon) and Anatolia (N. xanthodon) is reflected also in their karyotypic differentiation. The specimens from each of the five populations studied revealed a distinct karyotype which was different from those found in other populations. The fundamental number of autosomal arms varied from 68 to 72. The amount of C-heterochromatin was larger in the Thrace sample of N. leucodon compared to the Anatolian population of N. xanthodon. The active NOR sites were recorded on five autosomal pairs in N. leucodon, whereas only three or four pairs bearing NOR were observed in N. xanthodon. Differences between the studied populations were quantified in the analysis of the distribution pattern of the C-positive bands and the AgNOR sites in individual chromosomes which indicated a basal position of the Thrace sample of N. leucodon and its divergence from other studied populations. The karyotypes of the 56-chromosome populations of N. leucodon and N. xanthodon are thus distinctly different.

Show MeSH

Related in: MedlinePlus

The neighbour-joining tree of the relationships among the studied populations based on the distribution of the C-positive bands and AgNOR sites on individual chromosome pairs.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3921942&req=5

fig5: The neighbour-joining tree of the relationships among the studied populations based on the distribution of the C-positive bands and AgNOR sites on individual chromosome pairs.

Mentions: The distribution pattern of the C-positive band and the AgNOR sites in individual chromosomes is summarized in Tables 2 and 3. The resulting neighbour-joining tree derived from the presence or absence of the characters is shown in Figure 5. The Thrace individuals of N. leucodon appeared as the basal branch which was sister to the populations of N. xanthodon from Anatolia.


Comparison of the chromosome banding pattern in the 2n = 56 cytotypes of Nannospalax leucodon and N. xanthodon from Turkey.

Arslan A, Arısoy A, Zima J - ScientificWorldJournal (2014)

The neighbour-joining tree of the relationships among the studied populations based on the distribution of the C-positive bands and AgNOR sites on individual chromosome pairs.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3921942&req=5

fig5: The neighbour-joining tree of the relationships among the studied populations based on the distribution of the C-positive bands and AgNOR sites on individual chromosome pairs.
Mentions: The distribution pattern of the C-positive band and the AgNOR sites in individual chromosomes is summarized in Tables 2 and 3. The resulting neighbour-joining tree derived from the presence or absence of the characters is shown in Figure 5. The Thrace individuals of N. leucodon appeared as the basal branch which was sister to the populations of N. xanthodon from Anatolia.

Bottom Line: The amount of C-heterochromatin was larger in the Thrace sample of N. leucodon compared to the Anatolian population of N. xanthodon.The active NOR sites were recorded on five autosomal pairs in N. leucodon, whereas only three or four pairs bearing NOR were observed in N. xanthodon.Differences between the studied populations were quantified in the analysis of the distribution pattern of the C-positive bands and the AgNOR sites in individual chromosomes which indicated a basal position of the Thrace sample of N. leucodon and its divergence from other studied populations.

View Article: PubMed Central - PubMed

Affiliation: Department of Biology, Faculty of Science, Selçuk University, 42031 Konya, Turkey.

ABSTRACT
We present the karyotype characteristics of five cytotypes of mole rats (Nannospalax) with 56 chromosomes revealed by the C-banding and AgNOR staining analyses. We attempt to investigate if the specific distinction between the populations from Thrace (N. leucodon) and Anatolia (N. xanthodon) is reflected also in their karyotypic differentiation. The specimens from each of the five populations studied revealed a distinct karyotype which was different from those found in other populations. The fundamental number of autosomal arms varied from 68 to 72. The amount of C-heterochromatin was larger in the Thrace sample of N. leucodon compared to the Anatolian population of N. xanthodon. The active NOR sites were recorded on five autosomal pairs in N. leucodon, whereas only three or four pairs bearing NOR were observed in N. xanthodon. Differences between the studied populations were quantified in the analysis of the distribution pattern of the C-positive bands and the AgNOR sites in individual chromosomes which indicated a basal position of the Thrace sample of N. leucodon and its divergence from other studied populations. The karyotypes of the 56-chromosome populations of N. leucodon and N. xanthodon are thus distinctly different.

Show MeSH
Related in: MedlinePlus