B3A1C3K5C3R1O1S1S1I1N1G2
23 points
BACKCROSSING is validvalid
BACKCROSS, to breed a hybrid with something similar to its parent [v]
BACKCROSS, to create a cross between a hybrid and a parent [v]
BACKCROSS, to breed a hybrid with something similar to its parent [v]
BACKCROSS, to create a cross between a hybrid and a parent [v]