The following information accompanied stocks donated to the Bloomington Stock Center by John Roote, Cambridge University (12/01).
A new balancer variant was constructed at Cambridge by recombination between FM7j (FBba0000227) and FM7i (FBba0000226). The recombinant chromosome resulted from a crossover between oc and B, and the resulting chromosome has the markers y93j sc8 w1 B1.
The balancer short name of the variant is FM7j, B1.
The balancer variant is viable and fertile in homozygotes and hemizygotes.