Open AccessInterchromosomal effects of autosomal inversions in Drosophila melanogaster
Author(s) -
VALENTIN JACK
Publication year - 1972
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1972.tb01048.x
Subject(s) - biology , drosophila melanogaster , genetics , heterochromatin , chromosome , recombination , chromosomal inversion , evolutionary biology , position effect , inversion (geology) , drosophila (subgenus) , gene , karyotype , paleontology , structural basin
The interchromosomal effect of autosomal (mainly second chromosome) inversions on recombination in X of Drosophila melanogaster has been studied. The results did not reveal any specific kind of effect peculiar to any certain chromosome or type of inversion structure. Instead all kind of response pattern were encountered. The position of heterochromatin blocks in the inversions were not of great importance in the present material. When two independent inversions in a chromosome were combined, they sometimes exerted different effects depending on whether they were in cis or in trans position relative to each other. The genetic background, both within the inversions and in general, probably influenced the response pattern strongly. This genic influence is discussed referring to S imchen and S tamberg's (1969) model of coarse and fine controls, which is criticized for being too simplified.