题目内容
人的色盲是性连锁隐性基因b引起的，而蓝眼是常染色体隐性基因d引起的。两个褐色眼视觉正常的人结婚，生一个蓝眼并色盲的儿子，双亲的基因型是：母亲______，父亲______。
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案例分析题In some urban centers, workaholism is so common that people do not consider it unusual. They accept the lifestyle as normal. They frequently spend many (67) hours on the job each week and often do so by choice, not by (68) .Workaholism can be a serious problem. (69) true workaholics would rather work than do anything else, they probably don’t know how to (70) ; that is, they might not (71) movies, sports, or other types of entertainment. (72) of all, they hate to sit and do nothing. This (73) to relaxation may cause health problems such as heart attacks. (74) , typical workaholics don’t pay much attention to their families. They spend (75) time with their children, and their marriages may (76) .Is workaholism always dangerous Perhaps not. Some studies show that many workaholics have great (77) and interest in life. Their work is so (78) that they are actually very happy. For most workaholics, their jobs provide them (79) a challenge; this keeps them busy and creative.Other people (80) from work at age sixty-five, but workaholics usually (81) not to quit. They are still (82) about work and life in their eighties and nineties.Why do workaholics enjoy their jobs so much There are several advantages to work. Surely it offers more than financial (83) It provides people with self confidence. Psychologists claim that work gives people an identity through participation in work, (84) they get a sense of self-satisfaction and (85) Perhaps some people are compulsive about their work, but their (86) seems to be a safe—even an advantageous—one. 85（）
在女人的正常体细胞中，已观察到染色很深的巴氏小体，一般地说，这种高度浓缩的X染色体代表着（）。
案例分析题In some urban centers, workaholism is so common that people do not consider it unusual. They accept the lifestyle as normal. They frequently spend many (67) hours on the job each week and often do so by choice, not by (68) .Workaholism can be a serious problem. (69) true workaholics would rather work than do anything else, they probably don’t know how to (70) ; that is, they might not (71) movies, sports, or other types of entertainment. (72) of all, they hate to sit and do nothing. This (73) to relaxation may cause health problems such as heart attacks. (74) , typical workaholics don’t pay much attention to their families. They spend (75) time with their children, and their marriages may (76) .Is workaholism always dangerous Perhaps not. Some studies show that many workaholics have great (77) and interest in life. Their work is so (78) that they are actually very happy. For most workaholics, their jobs provide them (79) a challenge; this keeps them busy and creative.Other people (80) from work at age sixty-five, but workaholics usually (81) not to quit. They are still (82) about work and life in their eighties and nineties.Why do workaholics enjoy their jobs so much There are several advantages to work. Surely it offers more than financial (83) It provides people with self confidence. Psychologists claim that work gives people an identity through participation in work, (84) they get a sense of self-satisfaction and (85) Perhaps some people are compulsive about their work, but their (86) seems to be a safe—even an advantageous—one. 83（）
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