The loxP cassette has been excised from the P{(loxP.MCP-PRE)(FRT.bxd-PRE)Flipper2} element in the P{(loxP.MCP-PRE)(FRT.bxd-PRE)Flipper2}apMM-Mcp-bxd insertion.
The wings of apScer\FRT.bxd.MM mutant flies are completely normal.