59E;60A;41
Shows weak silencing of bw in trans despite strong silencing in cis. When transheterozygous with bw1 ommatidia can show a bw+ phenotype. There is no significant difference in the frequency of somatic pairing of the bw region in third instar larval neuroblasts of Tp(2;2)bw-DX7/bw+, Dp(2;2)bw-DX7/bw+ or wild type.