They argue that the fact that the mt DNA profile is "stably transmitted throughout progeny lanes 2 to 5 after 5 backcrosses (see the legend to Fig. 2) does not mean that said mt DNA profile is linked to CSM, let alone expressable.However, the application as filed (see bottom of page 2) also teaches that one has to select a plant which is phenotypically cytoplasmic male sterile, i.e. wherein C