Induction of crossing-over in Drosophila males by means of ovarian extract.
D000818:Animals; D002875:Chromosomes; D004330:Drosophila; D005260:Female; D006824:Hybridization, Genetic; D066298:In Vitro Techniques; D007621:Karyotyping; D010053:Ovary; D012723:Sex; D014020:Tissue Extracts / Q000494:pharmacology*
D014020:Tissue Extracts