下面是某类似白化病的遗传病的系谱图(该病受一对基因控制,D是显性,d是隐性)。据图回答:
图中3和6的基因型分别为()和()
参考答案:Dd和dd
Julie was good at German, French and Russian, all of ________ she spoke fluently.
A.who
B.whom
C.which
D.that
扩张型心肌病的主要临床表现是
A.心音减弱B.左心室明显扩大C.出现第三心音或第四心音D.心尖区可听到收缩期杂音E.下肢水肿