Hybrid dysgenesis in natural populations of Drosophila melanogaster in Japan. II. Strains which cannot induce P-M dysgenesis may completely suppress functional P element activity

Nobuko Hagiwara, Etsuko Nakamura, Etsuko T. Matsuura, Sadao I. Chigusa

Research output: Contribution to journalArticle

2 Scopus citations


Many inbred and isofemale lines derived from wild populations of Drosophila melanogaster were tested for gonadal dysgenic sterility, male recombination and snw secondary mutation. Among them, we have found strains whose dysgenic offspring show negligible sterility, and undetectable male recombination and snw mutation. They can be considered to be neutral strains in the strict sense. Such neutral strains appear to carry only defective P elements in their genomes. Taking the observations of Karess & Rubin (1984) into account, it is suggested that some defective P elements retain the function necessary for P cytotype. Cytotype determination mechanisms are discussed.

Original languageEnglish (US)
Pages (from-to)105-111
Number of pages7
JournalGenetical Research
Issue number2
StatePublished - Jan 1 1987
Externally publishedYes


ASJC Scopus subject areas

  • Genetics

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