读图，完成后面小题：

    One upon a time, there were two fishermen who were good at fishing. One day, they went to a lake to1 . One of them 2 fishing alone by himself 3the other was an outgoing person who loved to 4 friends with different people.

    When the second fisherman found that some tourists at the lake couldn't catch any fish. He said to them“I will teach you how to do that. If you catch 10 fish, give me one. If you don't get 10,you 5 give me anything.”

    They felt like old friends at the first sight. Both sides come to a(n)6 immediately. After he finished teaching a group, he went to teach another, and 7 taught them some fishing skills.He asked one for every 10 fish the tourists 8 .

    At the 9 of the day, the fisherman who kindly helped others received a(n)10 basket of fish, and also got to know a large group of new friends. At the same time, he was respected（尊重）as a(n)11 .

    However,12 fisherman didn't have much fun. When the others circled around his camp, he became even more 13 . After fishing for a whole day alone, he looked into the 14 basket,and found he had far fewer fish than his friend.

    If we 15 others succeed, we get both success and friends.

如图是人类某一家族甲种遗传病和乙种遗传病的遗传系谱图（设甲遗传病与A和a这一对等位基因有关，乙遗传病与另一对等位基因B和b有关，且甲乙两种遗传病至少有一种是伴性遗传病）．请回答有关问题：

（1）甲病的遗传方式是____ ，个体5基因型是____ ．

（2）个体8的乙种遗传病致病基因最初来源于图中的____ ．

（3）若个体3和个体4再生一个女孩，则该女孩表现正常的概率为____ ．

（4）若个体8和个体9结婚，则生下一个患甲病小孩的概率是____ ．