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  • 1
    Electronic Resource
    Electronic Resource
    Invasion of thehobo transposable element studied byin situ hybridization on polytene chromosomes ofDrosophila melanogaster (1994)
    Springer
    Genetica 93 (1994), S. 91-100 
    Details
    ISSN: 1573-6857
    Keywords: Drosophila melanogaster ; injected strains ; hobo transposable element ; in situ hybridization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The invasion kinetics ofhobo transposable element in theDrosophila melanogaster genome was studied byin situ hybridization on the polytene chromosomes. Six independent lines ofDrosophila melanogaster flies that had been previously transformed by microinjection of the pHFL1 plasmid containing a completehobo element were followed over 50 generations. We observed thathobo elements were scattered on each of the chromosome arms, with more insertion sites on the 3R arm. The total number of insertion sites remains quite small, between four and six, at generation 52. On the 2R arm, a short inversion appeared once at generation 52. Most of the integration sites reported here were already described for several transposons but some of them appear to be hotspots forhobo elements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01435242
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The evolutionary genetics of thehobo transposable element in theDrosophila melanogaster complex (1994)
    Springer
    Genetica 93 (1994), S. 79-90 
    Details
    ISSN: 1573-6857
    Keywords: evolution ; transposable element ; hobo ; Drosophila melanogaster
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Hobo elements are a family of transposable elements found inDrosophila melanogaster and its three sibling species:D. simulans, D. mauritiana andD. sechellia. Studies inD. melanogaster have shown thathobo may be mobilized, and that the genetic effects of such mobilizations included the general features of hybrid dysgenesis: mutations, chromosomal rearrangements and gonadal dysgenis in F1 individuals. At the evolutionary level somehobo-hybridizing sequences have also been found in the other members of themelanogaster subgroup and in many members of the relatedmontium subgroup. Surveys of older collected strains ofD. melanogaster suggest that completehobo elements were absent prior to 50 years ago and that they have recently been introduced into this species by horizontal transfer. In this paper we review our findings and those of others, in order to precisely describe the geographical distribution and the evolutionary history ofhobo in theD. melanogaster complex. Studies of the DNA sequences reveal a different level of divergence between the groupD. melanogaster, D. simulans andD. mauritiana and the fourth speciesD. sechellia. The hypothesis of multiple transfers in the recent past into theD. melanogaster complex from a common outside source is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01435241
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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