Synthesis of an attached autosome, C(3)RM, in Drosophila pseudoobscura

L. G. Harshman, T. Prout

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Drosophila pseudoobscura has three acrocentric autosomes. In the experiments reported, homologous arms of the third chromosome were attached to the same centromere. This is a 'reversed metacentric compound' third chromosome, denoted by C(3)RM. This compound chromosome is relatively fertile in within-strain crosses (ca. 50% egg hatch) but sterile when outcrossed to a normal karyotype. When constructing translocations for this experiment, the behavior of the Y-autosome translocations suggested that this species can tolerate more Y chromosome deficiency while retaining fertility than can Drosophila melanogaster. Finally, there were no Robertsonian exchanges observed among the 96 autosome-autosome translocations analyzed cytologically.

Original languageEnglish (US)
Pages (from-to)87-91
Number of pages5
Issue number2
StatePublished - Feb 1990

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Genetics
  • Plant Science
  • Insect Science


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