Produced by targeted meiotic recombination in a cross between two mice, one with an engineered loxP site telomeric to Hoxd1 and the other with a loxP site centromeric to Hoxd13, in the presence of Tg(Sycp1-cre)4Min. The entire Hoxd cluster from Hoxd1 through Hoxd13 genes is deleted. (J:182758)