Open AccessCharacterization of a small distal inversion in an inbred line of Drosophila melanogaster
Author(s) -
LAKE STAFFAN,
PALMGREN BJÖRN
Publication year - 1986
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.1601-5223.1986.tb00670.x
Subject(s) - drosophila melanogaster , chromosomal inversion , biology , recombination , genetics , inversion (geology) , inbred strain , gene , karyotype , chromosome , paleontology , structural basin
In an inbred line of Drosophila melanogaster (Oregon, our code “2”) a second inversion has been induced by X‐rays (symbol In(1) Lü‐ y wa ex vf‐2). The inversion is small (about 40 bands) and is located between w and ex (bands 3E to 4C). Inversion heterozygous females have been scored for recombination frequency, primary and secondary non‐disjunction. The In (1) Lü‐2 heterozygous females showed decreased recombination frequency as far as to v. The total recombination (y‐f) was decreased to about half. The primary non‐disjunction was not detectably altered compared to that characterizing regular gene order, but the secondary non‐disjunction was slightly enhanced and a value of 7% with no excess of XY males was obtained. Thus, both similarities and dissimilarities, as compared to regular gene order and the large proximal inversion In (1) Lü‐1 in the same genome, were obvious and are discussed.