关于胆囊的描述错误的是()
A.呈长梨形
B.容量为40~60ml
C.位于胆囊窝内
D.分为底、体、颈、管
E.胆囊底、肝总管和肝的脏面围成Calot三角
参考答案:E
--What did your father ask you? --He asked me ___________.
A.whom I was chatting with
B.where am I with my friends
C.when would I go home
D.if I have finished my homework
用纯合子果蝇作为亲本研究两对相对性状的遗传实验,结果如表所示。下列说法不正确的是()
A. 果蝇的灰身、红眼是显性性状
B.由组合②可判断控制眼色的基因位于X染色体上
C.若组合①的F1随机交配,则F2雌蝇中组合的灰身红眼占1/16
D.若组合②的F1随机交配,则F2雄蝇中黑身白眼占1/8