甲、乙为两种单基因遗传病,如图为某岛屿上与外界隔绝的家系的有关这两种遗传病的遗传系谱图,其中有一种病的致病基因在X染色体上(甲病由A和a控制,乙病由B和b控制)。请回答下列问题:(1)甲病的致病基因位于__________染色体上,判断依据是________________,乙病的遗传方式为__________。(2)图中4号个体的基因型为__________,8号个体的基因型为__________。(3)11号个体不携带致病基因的概率为__________,6号和7号再生一个同时患两种病的男孩的概率
The reason ________ he was late for class was not the reason ________ he gave me.
[ ]
A.
that; where
B.
why; because
C.
which; that
D.
why; that