TABLE 2.

RAD51 is required for repair of MuDR-induced DSBs in vegetative tissues

Genotype	Mu activity	No. plants with severe developmental defectsa	No. normal plants
RAD51−b	Active	10c	13
RAD51+b	Active	0	30
RAD51−d	Inactive	0	15

^aThe severe developmental defects are described in Figure 5.

^bProgeny of cross 8 (materials and methods). Because plants from these two categories are siblings, they can be directly compared.

^cOne defective plant died 2 weeks after germination.

^dProgeny of cross 9. With the exception of rad51 genotypes and Mu activity, this category of plants possesses almost the same genetic background as the other two categories.