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Authors :
Melissa A. Leone
Ronny C. Woodruff
Ian A. Boussy
Masanobu Itoh
Source :
Genetica. 106:231-245
Publication Year :
1999
Publisher :
Springer Science and Business Media LLC, 1999.

Abstract

As part of our effort to monitor changes in the clinal pattern of P element-associated traits in eastern Australian Drosophila melanogaster, we investigated the genomic P elements of 293 isofemale lines collected in the period 1991–1994 from 45 localities. P elements were present in many copies in all genomes examined, with full-size P and KP element size classes accounting for the large majority. SR elements were not present in at least 92% of the lines tested. South of about 26° south Latitude (°SLat), the ratio of KP to full-size P elements (KP/P ratio) increased, correlating weakly with the P-M phenotypes of the populations, from moderately P populations (26–29°SLat) to M populations (37–38°SLat) North of 26°SLat, in weak P populations, the KP/P ratio was higher than between 26 and 29°Slat. The KP/P ratio appears to be higher in the northern populations than it was when previous studies were done. Overall, a high KP/P ratio among lines correlated roughly with a lack of P activity, but it also correlated with reduced repressor function. In a sample of 30 lines, a maternal effect of repressor function did not show a pattern with latitude, nor with KP/P ratio, nor with presence or absence of P activity.

Details

ISSN :
00166707
Volume :
106
Database :
OpenAIRE
Journal :
Genetica
Accession number :
edsair.doi...........5347cde340f060d86c2dc8c77bb3c585
Full Text :
https://doi.org/10.1023/a:1003918417012