Which chromosomes are subtelocentric or acrocentric? A new karyotype symmetry/asymmetry index


CARYOLOGIA, vol.68, no.3, pp.239-245, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 68 Issue: 3
  • Publication Date: 2015
  • Doi Number: 10.1080/00087114.2015.1032614
  • Journal Name: CARYOLOGIA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.239-245
  • Keywords: Cetacea, new formula, phylogeny, symmetry/asymmetry index, BANDED KARYOTYPES, WHALE, PHYLOGENY, LINEAGES
  • Yozgat Bozok University Affiliated: Yes


Karyotype asymmetry is well known in karyological studies of plants; however, there is no calculation of karyotype symmetry/asymmetry in other organisms. This study introduces a new formula (S/A(I)) for the measurement of the karyotype symmetry/asymmetry index. The main questions investigated are as follows. (i) Why is the new karyotype symmetry/asymmetry formula necessary? (ii) Which chromosomes are subtelocentric or acrocentric? (iii) What are the limits of symmetry/asymmetry according to the new formula? (iv) Is the human karyotype symmetrical or asymmetrical? In addition, the symmetry/asymmetry index is applied to the species and families of Cetacea as an example.