The Bactrocera tryoni homologue of the Drosophila melanogaster sex-determination gene doublesex

作者：Shearman DCA; Frommer M^*

来源：Insect Molecular Biology, 1998, 7(4): 355-366.

DOI：10.1046/j.1365-2583.1998.740355.x

• sex determination
• doublesex
• gene
• Y-determined
• tephritid
• fruit fly

A homologue of the bifunctional sex-determining gene, doublesex (dsx), has been identified in the tephritid fruit fly, Bactrocera tryoni, and has been found to be expressed in a sex-specific manner in adult flies. The male- and female-specific cDNAs are identical at their 5' ends but differ at their 3' ends and appear to be the products of alternate splicing. The level of identity of the sex-specific DSX proteins of B. tryoni with the D. melanogaster DSX proteins, across the region corresponding to the DNA binding domain and the oligomerization domains, is greater than 85%. Four sequence motifs which are ten to thirteen bases identical to the TRA/TRA-2 binding sites (thirteen-nucleotide repeat sequences) are present in the female-specific exon of the B. tryoni dsx gene.

• 出版日期1998-11