A plant breeder plans to introgress a gene for pathogen resistance (R) from a wild species (B) into a cultivated variety (A). Panel I in the figure shows a profile of DNA markers for A and B. Panel II shows a genetic map for the linkage group which has the gene for pathogen resistance.
Which one of the following options has the correct choice of markers for foreground (FG) and background (BG) selection, respectively?
1
FG : B3, A4 and BG : A2, A3, A7
2
FG : B3, B2 and BG : A1, A5, A6, A8
3
FG : B3, B2 and BG : A2, A3, A4, A7
4
FG : B3, A4 and BG : A2, B2, B7 and A7