1.非选择题- (共2题)

(1)细胞图像D→F属于___________分裂,D→A属于________分裂。根据细胞______(填字母)可判断该高等动物为___________(填“雌”或“雄”)性。
(2)图中A细胞叫________细胞,细胞中含有_______条染色单体,_______对同源染色体。
(3)写出与图B细胞同时形成的另一个细胞的基因组成_________(不考虑基因突变等)。
(4)图D细胞在分裂产生配子时A与a的分离和a与a的分开分别发生在座标G中___________、___________阶段(用图G中数字表示)。
(5)下图表示某高等动物(2N=4)生殖器官中存在的5种细胞,用字母和箭头将下图5种细胞按细胞分裂的方式和顺序连接起来(图像可重复使用)______________________。(2分)


(1)由左图可知,该动物体内产生的细胞中最多存在_____个b基因,最少含有______个A基因。
(2)右图所示控制黑色素合成的三对基因的遗传是否遵循自由组合定律?_______(填“是”或“否”)。原因是___________________________。
(3)基因型都为AaBbCc的雌雄个体的体色的表现型为____________,这样的两个个体杂交其后代中黑色个体所占的比例理论上应为________。
2.单选题- (共23题)

A.该状态下的原着丝点已被纺锤丝拉开一分为二,并移向细胞两极
B.②与④上的基因分离体现了分离定律
C.图中基因位点①、②、③、④可能分别是A、b、B、b
D.该状态下的细胞含有8条染色体,其中②和③互为姐妹染色单体
A.卵细胞(雌配子):R∶r=1∶1精子(雄配子):R∶r=3∶1 |
B.卵细胞:R∶r=3∶1精子:R∶r=3∶1 |
C.卵细胞:R∶r=1∶1精子:R∶r=1∶1 |
D.卵细胞:R∶r=3∶1精子:R∶r=1∶1 |
A.40000、10000 | B.10000、10000 |
C.10000、5000 | D.10000、2500 |
A.“F1(Dd)能产生数量相等的两种配子(D∶d=l∶1)”属于演绎推理内容 |
B.“测交试验”是对推理过程及结果的检测 |
C.“生物性状是由遗传因子决定的,体细胞中遗传因子成对存在、配子中遗传因子成单个存在、受精时雌雄配子随机结合”属于假说内容 |
D.“一对相对性状的遗传实验和结果”不属于“假说—演绎法”的内容 |
A.杂交时,须在花蕾期对母本进行人工去雄 |
B.自交时,雌蕊和雄蕊都无需除去 |
C.杂交时,须在开花前除去父本的雌蕊 |
D.人工授粉后,应对母本套袋 |
A.F1产生的花粉遇碘1/2变蓝色,1/2变橙色
B.F1植株自交所结的种子遇碘3/4变蓝色,1/4变橙色
C.让F1植株与糯性植株杂交,产生的种子遇碘1/2变蓝色,1/2变橙色
D.F1植株自交所结的、遇碘变蓝色的种子中纯种占1/2,杂种占1/2
A.每次抓取完应将小球放回原来的小桶中,保证每种配子被抓的概率相等
B.两个小桶代表的是雌雄生殖器官
C.两个小桶内的球数目可以不相等,但是每个桶内的D和d的球数目一定要相等
D.两个小桶内的球数目必须相等,但是每个桶内的D和d的球数目可以不相等
①鉴别一只具有显性性状的羊是纯合体还是杂合体
②在一对相对性状中区分显隐性
③不断提高小麦抗病品种的纯度
A.杂交、自交、测交 | B.测交、测交、杂交 |
C.测交、杂交、自交 | D.杂交、杂交、杂交 |
A.8种表现型 |
B.高茎子粒饱满:矮茎子粒皱缩为15:1 |
C.红花子粒饱满:红花子粒皱缩:白花子粒饱满:白花子粒皱缩为9:3:3:1 |
D.红花高茎子粒饱满:白花矮茎子粒皱缩为27:1 |
| 黑色短毛 | 黑色长毛 | 白色短毛 | 白色长毛 |
♀ | 44 | 17 | 14 | 6 |
♂ | 45 | 14 | 15 | 5 |
A.同一对同源染色体上 |
B.一对姐妹染色单体上 |
C.两对常染色体上 |
D.一对常染色体和X染色体上 |
A.子代共有9中基因型
B.子代共有5种表现型
C.子代有花瓣植株中,AaRr所占比例为1/3
D.子代红花植株中,aaRr所占比例为1/6
A.4种 | B.5种 | C.9种 | D.10种 |
A.9:4:3 | B.12:3:1 | C.9:3:4 | D.9:6:1 |
A.1/2、1/8 | B.3/4、1/4 | C.1/4、1/4 | D.1/4、1/8 |
3.选择题- (共13题)
We all admit that modern technology has taken over our lives, for good of course. Young people celebrate the fast speed 1 can move at. But there is a group of people who cannot 2.
It is the group of people who are caught up between traditional and 3 society, not exactly old and 4 change, but trying very hard to become modernized, ending up being 5in the middle. They are 40 to 60 years old and6the latest iPhone or Samsung phone. They buy an iPad just 7 they can afford to, and to play the same games on a larger screen.
They are almost 8 the teenagers five years ago, 9 on their phones playing a game or using social media. They're everywhere. And I saw something today that made me extremely 10.
On a train, a mother was 11 playing a Candy Crush-like game. Her daughter was sitting beside her. The little girl, about five years old, was talking to her mother about her day, shouting the next stop's name cheerily-obviously desperate attempts to get her mother's 12.
The mother? All she did was nod and say the occasional “mmhm”. With her eyes on the13, she concentrated on completing the level. I watched the girl make a final 14 to get her mom to look at her, and when she had 15 she sighed and fell silent, defeated.
It broke my heart, and got me 16 —what kind of game can make you 17 that you have the most beautiful thing in the world, a person you love with all your heart? What does it 18when you won't even look into her eyes or listen to her?
The scene was so familiar years ago when parents 19that their children were too interested in their mobile devices. Look how the tables have turned now. I'm 20 whether to laugh or to cry. But all I can do now is hope that this storm passes.
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【1】题量占比
非选择题:(2道)
单选题:(23道)
选择题:(13道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:9
5星难题:0
6星难题:15
7星难题:0
8星难题:1
9星难题:0