1.非选择题- (共1题)

根据资料,回答下列问题:
(1)根据以上信息,可判断上述杂交亲本中,突变品系1的基因型为________。
(2)为鉴别第Ⅱ组F2中无豌豆素的基因型,取该豌豆自交,若后代全为无豌豆素的植株,则其基因型为________。
(3)第Ⅲ组的F2中,无豌豆素豌豆的基因型有________种。若从第Ⅰ、Ⅲ组的F2中各取一粒均能产生豌豆素的豌豆,二者基因型相同的概率为________。
(4)基因A和基因B与豌豆素合成关系如右图所示。由图可知,该性状是基因通过 来实现的

2.单选题- (共10题)

A.图甲所示细胞分裂只发生在雌蜂体内,图乙所示细胞分裂只发生在雄蜂体内 |
B.甲、乙两图所示细胞中的染色单体数分别是8条和4条 |
C.图甲所示细胞分裂后能形成基因型为AD的卵细胞 |
D.图乙所示细胞分裂既可能是减数分裂,也可能是有丝分裂 |
A.AbC、ABc、ABC、abc | B.ABc、ABC、aBC、aBC |
C.ABC、abc、aBC、Abc | D.ABc、ABc、abC、abC |
A.有丝分裂和减数分裂均可发生基因突变和染色体变异 |
B.有丝分裂及减数第二次分裂后期的细胞中均无同源染色体 |
C.黑猩猩细胞中的性染色体上的基因均与性别决定有关 |
D.三倍体西瓜高度不育是因为减数分裂时同源染色体不联会 |
A.染色体数目X1与X2相同,Y1与Y2不同 |
B.核基因种类X1与X2不同,Y1与Y2相同 |
C.染色体数目X1与X2不同,Y1与Y2相同 |
D.核基因种类X1与X2相同,Y1与Y2不同 |

A.图Ⅰ表示的细胞中有8条染色体、4个染色体组 |
B.如果①②过程表示减数分裂,则可能发生交叉互换和自由组合 |
C.如果①②过程表示有丝分裂,产生的细胞不再分裂 |
D.如果①②过程表示减数分裂,图Ⅲ中的a、b、c、d 4个细胞为4个有性生殖细胞 |
A.显性性状是受显性基因控制的 |
B.具有显性性状的个体可能是纯合子 |
C.相对性状的纯合子杂交,子代F1显现出来的亲本性状是显性性状 |
D.具有显性性状的个体自交后代一定会产生性状分离 |
A.豌豆是严格闭花受粉的植物 |
B.豌豆花比较大,易于做人工杂交实验 |
C.豌豆在杂交时,母本不需去雄 |
D.豌豆具有稳定的、容易区分的相对性状 |

A.3∶1 | B.9∶1 | C.15∶1 | D.1∶0 |
A.YYRR和YYRr | B.YYrr和YyRr |
C.YYRr和YyRr | D.YyRr和Yyrr |
3.选择题- (共7题)
Beethoven had an ugly face and a very 1 temper(脾气), but people 2 him to their homes.When he lost his temper, they forgave(原谅)him.He was often poor and ill during his life.After one illness, he suddenly 3 himself deaf.At that time he was 4 31.What a blow it was on him!
5 this didn't stop Beethoven 6 on in his life.He went on 7 much music. He wrote long pieces and short pieces, happy ones and 8 ones.During his life, he composed(作曲)about 300 pieces. 9 people's surprise, he wrote some of his best and most beautiful pieces 10 he became deaf.Many of them are known and loved all over the world.
One day, a woman traveled alone in the mountains.When she was walking, she found a precious (珍贵的) stone.She was very happy and put the stone into her bag.
The next day, the woman met another traveler.The traveler was hungry and the woman opened her bag to s hare her food with him.The hungry traveler saw the precious stone and said, “How beautiful the stone is! Can I have a look?” The woman gave it to the traveler.The traveler looked and looked, and then he asked the woman whether she would like to give it to him.She gave the stone to him without hesitation (犹豫).
The traveler left.He was very happy because he knew he could get lots of money by selling the stone and he could live a rich life.But a few days later he came back to return the stone to the woman.
“I know how precious the stone is,” the traveler said. “But I gave it back.I hope that you can give me something even more precious.” “Even more precious? What is that?” the woman asked. “Your beautiful mind is more precious than the stone,” the man said.
I went hiking to a mountain with my friends last summer. It was a good trip at the beginning but something unexpected happened on the half way.
One of my friends, Mike, suddenly felt a terrible pain in his stomach and he couldn't move any further. Nobody knew what to do. One girl tried to call her mum with her mobile phone but there was no signal in the mountain area. Luckily I brought medicine with me. After Mike took some, he felt much better. We walked on, and then we all enjoyed ourselves on the top of the mountain.
I went hiking to a mountain with my friends last summer. It was a good trip at the beginning but something unexpected happened on the half way.
One of my friends, Mike, suddenly felt a terrible pain in his stomach and he couldn't move any further. Nobody knew what to do. One girl tried to call her mum with her mobile phone but there was no signal in the mountain area. Luckily I brought medicine with me. After Mike took some, he felt much better. We walked on, and then we all enjoyed ourselves on the top of the mountain.
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【1】题量占比
非选择题:(1道)
单选题:(10道)
选择题:(7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:0
5星难题:0
6星难题:8
7星难题:0
8星难题:3
9星难题:0