题目

人类白化病由基因a控制，色盲由基因b控制，据下图分析：（I是白化色盲） ①I的性别是          ②在下面的三个图中分别画出C、D、G三个细胞的染色体示意图，并注明相关基因． ③若这对夫妇生下了孩子H，则H的基因型为       ，表现型为（要求指出性别）    ④该对夫妇所生子女中，白化病色盲男孩概率为       ． ⑤若该对夫妇生下了一唐氏综合症孩子（第21号染色体多一条）H，则这个孩子的染色体组成可表示为（常染色体用I表单词正确形式填空（共10小题;每小题1分，满分10分）小题1:Her Chinese is good: she has a _____词汇 of about two thousand words.小题2:When you learn English, you have to choose which accent to_____ 采用:American or British. 小题3:From her accent, it’s______ 显然that she’s from Shanghai.小题4: There are many______ 种类of English in the world.小题5:Some people learn two or three languages when they are children: they can______ 切换from one to another with no problem.小题6: That dictionary______ 属于to me. I lost it last week.小题7:Give all the money to the_______ 会计 and she will add up the figures.小题8:Your hair is much too long--- go to the ______ 理发师and get it cut.小题9:Her father was a _____ 矿工and he always hoped his daughter would be a teacher.小题10: The American players are visiting China in March--- I’ll book their tickets at the travel ______ 旅行tomorrow.