Characterization of small distal inversion in an inbred line of Drosophila melanogaster

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 recombinati...

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Bibliographic Details
Published in:Hereditas 1986-01, Vol.105 (2), p.255-261
Main Authors: Lake, S, Palmgren, B
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
chromosome banding
Cytogenetics
Drosophila melanogaster
Drosophilidae
Fundamental and applied biological sciences. Psychology
genes
Genetics of eukaryotes. Biological and molecular evolution
genome
inbred lines
inversion
Invertebrata
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Summary: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.
ISSN:0018-0661
1601-5223
DOI:10.1111/j.1601-5223.1986.tb00670.x