You identify three mutations that affect germination in the above plant species. two mutations result in no germination in red light or far red light.

Seeds from homozygous knockout dag1-1 plants do not develop dormancy and germinate also in the absence of light. Segregation analysis indicates that the effect of the mutation is maternal. Accordingly, in situ mRNA hybridizations reveal expression of DAG1 in the vascular tissue of the flower and maturing fruit but not in others

It's cell theory. easy name i would think.