hypomorphic allele - genetic evidence
partially lethal (with cos3)
viable
wing (with cos3)
20% of cos3/cos11 flies show a duplicated wing phenotype.
cos3/cos11 is rescued by cos+t6.5
cos3/cos11 is rescued by cos6.5.GFP
cos3/cos11 is rescued by cos6.5ΔC.GFP