A loxP site was inserted upstream of exon 2 and an FRT flanked neo cassette with a 3' loxP site was inserted downstream of exon 4. Flp mediated recombination removed the neo cassette leaving exons 2 through 4 floxed. (J:165296)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count