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【简答题】
家鸡的只要有c和o基因两者纯合或任何一个处于纯合状态就表现白色,有色要有2个显性基因C和O同时存在。今有一基因型为CCoo的雌性个体与一基因型为ccOO的雄性个体交配,子1有色个体,子1代与双隐性个体ccoo测交,测交子代中有色个体68只,白色个体204只,问o-c基因之间有连锁吗?如有连锁,交换值是多少?
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参考答案:
举一反三
【简答题】用括号内所给词的适当形式填空。 1. The more _________ (exercise) you take, the healthier you will be. 2. I think going _________ (run)is the best way to keep fit. 3. This storybook _________ (interest)me very much wh...
【简答题】光电式传感器是用[填空(1)]做敏感元件、将[填空(2)]信号转换为[填空(3)]信号的装置。按其输出信号的形式,可以分为[填空(4)]式、[填空(5)]式、开关量输出式三种。
【简答题】Most students feel it difficult to remember new words when they begin to study English. Now I will give you some advice. 1. Do not waste time in learning a list of English words. It is the hardest way...
【判断题】MAC层位于LTE无线接入层的L2层。
A.
正确
B.
错误
【简答题】Ex. 6 Rewrite the following sentences, replacing the underlined words with their synonyms you have learned in this unit. 1. Rebecca was, without question, the most skilled technician on the team. 2. ...
【简答题】Passage 18 "Loving a child is a circular business. The more you give, the more you get, the more you want to give." Penelope Leachwon said. What she said 1) _____ to be true of my blended family. I wa...
【简答题】Questions 1-10 Complete the statements below. Use NO MORE THAN THREE WORDS for each answer. 1. Seminars are attended by __________ staff and senor students. 2. The seminar’s focus is broader and tends...
【简答题】Questions 1-5 Complete the statements below. Write NO MORE THAN THREE WORDS in each space provided. 1. Before you move you must give Electricity Board __________ as early as possible to make sure you...
【单选题】吗啡对中枢最主要的作用是
A.
镇静
B.
抑制呼吸
C.
镇痛
D.
缩瞳
【简答题】The more you give, .(receive)
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