One loxP site was inserted upstream of exon 1 and a floxed neomycin resistance cassette was inserted downstream. Flp-mediated recombination remove the neomycin resistance cassette and left exon 1 floxed. (J:196659)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count