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【简答题】
猪的耳型受基因Mm控制，背型受基因Hh控制，两对基因都位染色体上，且独立遗传。猪的耳型和背型两种性状的表现型与基因型之间的关系如下表，请回答： (1)子代有立耳垂背、立耳中垂背、立耳直背，其数量比为1：2：1，则亲本的基因型组合是：__________。 (2)若杂交实验中，子代有半立耳中垂背、立耳中垂背、半立耳直背、立耳直背，其数量比为1：1：1：1，则亲本的基因型组合是：________或________。
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举一反三
【单选题】Task 3 Car servicing is something that every car owner has to experience at least sometime of the year. The best method to service your car is to go to your car service station and have the servicing ...
A.
To service your car by yourself.
B.
To have your car serviced at the service station.
C.
To turn to other car owners for help.
D.
To send your car back to the car maker.
【简答题】自主学习任务单
【简答题】Passage 1 Car servicing is something that every car owner has to experience at least some time of the year. The best method to service your car is to go to your car service station and have the servic...
【单选题】某随机试验每次试验的成功率为p(0＜p＜1)，则在3次重复试验中至少失败1次的概率为( )
A.
(1-p) 3
B.
1-p 3
C.
3(1-p)
D.
(1-p) 3 +p(1-p) 2 +p 2 (1-p)
【单选题】Task 1 Read the following passage and answer the questions. Car servicing is something that every car owner has to experience at least some time of the year. The best method to service your car is to ...
A.
To service your car by yourself.
B.
To turn to other ear owners for help.
C.
To send your ear back to the car maker.
D.
To have your car serviced at the service station.
【单选题】Task 13 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> Car servicing is something that every car owner has to experience at least sometime of the year. The best method to serv...
A.
To service your car by yourself.
B.
To have your car serviced at the service station.
C.
To turn to other car owners for help.
D.
To send your car back to the car maker.
【简答题】自主学习任务单
【单选题】每次试验的成功率为p(0A.(1－p)2B.1－p2C.3(1－p)D.1－p3
A.
每次试验的成功率为p(0＜ｐ＜１） A.(1-p) 2
B.
1-p 2
C.
3(1-p)
D.
1-p 3
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