features of gene conversions generalized from this molecular history are 1 ) conversions are restricted to regions maintaining high degrees of sequence similarity , 2 ) one gene may dominate in converting another gene , 3 ) sequences involved in conversions may accumulate changes more rapidly than expected , and 4 ) certain elements , such as polypurine/polypyrimidine [ y ) n ) and ( tg ) n elements , appear to be hotspots for initiating or terminating conversion events .
C0013879
elements
C0028158
n elements