Fig. 2. Donor genome contribution for the introgression at one target locus when (A) a complete marker-assisted selection (MAS) step [selectable population size (N_sl) = 100] is conducted during each of the three backcross (BC) generations, and (B) partial MAS is conducted during the first two BC generations (N_sl = 10) and a complete MAS is conducted at the third BC generation (N_sl = 100).