title: Lack of correlation between crossing-over and chromosome distance between inversions in Drosophila ananassae.
abstract: Two linked inversions, AL and ZE, located in the opposite limbs of the second chromosome of Drosophila ananassae are separated from each other by nearly 32% of the total length of the second chromosome. Crossing-over between these inversions when heterozygous was studied in females and males by the salivary-gland smear technique using karyotypically homozygous stocks. The results of recombination experiments show that there is a strong suppression of recombination between inversions when heterozygous, in spite of a large euchromatic distance available for crossing-over between them. Thus there is no correlation between chromosome distance and crossing-over between heterozygous inversions in the second chromosome of D. ananassae when studied cytologically.
authors.affiliation: Centre of Advanced Study in Zoology, Banaras Hindu University, Varanasi, India.
authors.forename: B N
authors.initials: BN
authors.lastname: Singh
authors.forename: S
authors.initials: S
authors.lastname: Mohanty
mesh_terms: D000818:Animals; D007446:Chromosome Inversion; D003434:Crossing Over, Genetic; D004330:Drosophila / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D008297:Male; D011995:Recombination, Genetic