Heterochromatin heterogeneity and rapid divergence of the sex chromosomes in Chorthippus parallelus parallelus and C. p. erythropus (Orthoptera)

J. L. Bella, L. Serrano, G. M. Hewitt, J. Gosalvez

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Mitotic chromosomes from individuals of a Pyrenean hybrid zone between two subspecies of the grasshopper Chorthippus parallelus have been pretreated as for C-banding and subsequently stained with 6-diamidino-2-phenylindole (DAPI) and (or) Chromomycin A3 (CMA). The results, which are different from those obtained with Giemsa C-banding or standard DAPI-CMA treatments show (i) hidden heterochromatic heterogeneity that may be correlated with the existence of distinct families of repetitive DNAs, (ii) information about the possible independent origin of the three detected types of heterochromatin, and (iii) a further marker difference between the sex chromosomes of these two subspecies. This last result leads us to discuss the possible differential rates of evolution of sex chromosomes and autosomes in these subspecies and provides us with a new tool for the study of the structure and dynamics of this hybrid zone.

Original languageEnglish (US)
Pages (from-to)542-547
Number of pages6
JournalGenome
Volume36
Issue number3
DOIs
StatePublished - Jan 1 1993
Externally publishedYes

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Molecular Biology
  • Genetics

Cite this