A.染色體結(jié)構(gòu)改變 B.染色體數(shù)目改變 C.身材矮小 D.多發(fā)畸形、體格智力發(fā)育遲緩 E.不育
A.XXX B.XXYY C.XXY D.XXXY E.XXXXY
A.1/50 B.1/200 C.1/100 D.1/400 E.1/2000