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. 1989 Nov;123(3):485–494. doi: 10.1093/genetics/123.3.485

The Abnormal Oocyte Phenotype Is Correlated with the Presence of Blood Transposon in Drosophila Melanogaster

G Lavorgna 1, C Malva 1, A Manzi 1, S Gigliotti 1, F Graziani 1
PMCID: PMC1203820  PMID: 2574696

Abstract

The abnormal oocyte mutation (2;44) originates in the wild: it confers no visible phenotype on homozygous abo males or females, but homozygous abo females produce defective eggs and the probability of their developing into adults is much lower than that of heterozygous sister females. We isolated by chromosome walking 200 kb of DNA from region 32. This paper reports that a restriction enzyme site polymorphism analysis in wild type and mutant stocks allowed us to identify a DNA rearrangement present only in stocks carrying the abo mutation. The rearrangement is caused by a DNA insert on the abo chromosome in region 32E which, by restriction map and sequence analysis, was identified as copia-like blood transposon. The transposon, in strains that had remained in abo homozygous conditions for several generations and had lost the abo maternal-effect, was no longer present in region 32E. Certain features of the abo mutation, discussed in the light of this finding, may be ascribed to the nature of the particular allele studied.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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