EVIDENCE FOR A HOST ROLE IN REGULATING THE ACTIVITY OF TRANSPOSABLE ELEMENTS IN DROSOPHILA-MELANOGASTER - THE CASE OF THE PERSISTENT INSTABILITY OF BARI-1 ELEMENTS IN CHAROLLES STOCK
N. Junakovic et al., EVIDENCE FOR A HOST ROLE IN REGULATING THE ACTIVITY OF TRANSPOSABLE ELEMENTS IN DROSOPHILA-MELANOGASTER - THE CASE OF THE PERSISTENT INSTABILITY OF BARI-1 ELEMENTS IN CHAROLLES STOCK, Genetica, 100(1-3), 1997, pp. 149-154
In most reports in which the activity of numerous Drosophila transposo
n families has been studied, only a subset of the families tested appe
ars mobile. A comparison of these data shows that there are no transpo
sons inherently more unstable than others and suggests that host facto
rs regulate the activity of transposable elements. Consistent with thi
s conclusion are the properties of Bari 1 elements, which are the only
ones of the 14 families tested to be unstable in Charolles stock. Ins
tability is persistent over 53 generations and appears to affect recur
rent insertion sites.