Achiasmatic meiosis and complex heterozygosity in female cyclopoid copepods (Copepoda, Crustacea)

C. C. Chinnappa, Reginald Victor

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In Mesocyclops edax S.A. Forbes, 2n=14, a North American copepod, the females are heterozygous for several interchanges leading to the formation of large rings of chromosomes (rings of 14, or of 12 plus 1 bivalent) at meiotic metaphase, comparable to those of the plant Oenothera, although no chiasmata are present. The chromosomes are more or less metacentric and have large terminal H-segments. In the rings homologous arms are held together by connecting fibers which insert close to the euchromatin-heterochromatin junctions. Coordinated orientation of the zigzag type seems to be the role.

Original languageEnglish
Pages (from-to)227-236
Number of pages10
JournalChromosoma
Volume71
Issue number2
DOIs
Publication statusPublished - Jan 1979

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Copepoda
Crustacea
Meiosis
Oenothera
Euchromatin
Heterochromatin
Metaphase
Chromosomes
Ring Chromosome 14 Syndrome

ASJC Scopus subject areas

  • Genetics

Cite this

Achiasmatic meiosis and complex heterozygosity in female cyclopoid copepods (Copepoda, Crustacea). / Chinnappa, C. C.; Victor, Reginald.

In: Chromosoma, Vol. 71, No. 2, 01.1979, p. 227-236.

Research output: Contribution to journalArticle

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