Insertion of a 1150bp internally deleted P{KP} element (all base pairs between 807 and 2561 are deleted). This P-element is inserted in the 5' non-coding exon of sn, at base pairs 2647 to 2654.
The alleles snBL4, snBL6 and snBL8 may be derived from a single premeiotic event. Appreciable somatic reversion of this allele is seen. The rate of somatic reversion is 0.56%. The movements of the P-elements in these somatic reversions occur early in development, and require a trans-acting maternal effect component (P\TMo). Somatic reversion occurs preferentially in attached-X stocks.
Generated using the Loua 83 P-strain.
The alleles snBL4, snBL6 and snBL8 may be derived from a single premeiotic event. Appreciable somatic reversion of this allele is seen. The rate of somatic reversion is 0.56%. The movements of the P-elements in these somatic reversions occur early in development, and require a trans-acting maternal effect component (P\TMo). Somatic reversion occurs preferentially in attached-X stocks.