The In(2)40Rk inversion was induced in an agouti mouse and this inversion is in coupling with agouti. Embryos were generated for cryopreservation by crossing a repulsion heterozygote, In(2)40Rk A/+ a with C57BL/6J, which is homozygous for nonagouti. Thus, all agouti mice recovered are expected to be heterozygous for the inversion in repulsion with nonagouti: In(2)40Rk A/+ a
Prior to cryopreservation this was sometimes maintained by breeding homozygotes, so homozygotes are viable and have bred.
When using the inversion, Chr 2, Roderick 40 mouse strain in a publication, please cite the originating article(s) and include JAX stock #000723 in your Materials and Methods section.