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【简答题】
鸡的性别决定方式是ZW型。当显性基因A存在时，鸡的羽毛可表现为斑纹或非斑纹，而基因型aa的鸡总是白色羽毛。羽毛的斑纹（B）对非斑纹（b）为显性，该基因位于Z染色体上，W染色体上无此基因。这两对等位基因独立遗传。 现有一只纯合非公鸡与纯合的白羽母鸡交配，F1与非各占一半，F1自由交配得到F2。请回答： ①亲本中纯合非公鸡的基因型为（），纯合的白羽母鸡的基因型为（）。 ②F2中非：：白羽的比例=（）。 ③某蛋场欲从F2中选取种鸡，在后代中从雏鸡的羽毛颜色就能分辨雌雄。则F2中选择表现型的公鸡与表现型（）的母鸡作为种鸡，交配产生的后代雏鸡中能被直接识别的占全部雏鸡的比例是（）
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【判断题】Self confidence and a “can do” attitude is the biggest quality a businessman ought to have.
A.
正确
B.
错误
【判断题】Your self-esteem and confidence can get a big boost during the school sports participation.
A.
正确
B.
错误
【简答题】One way to develop self-confidence is to do the thing you fear and get a record of successful experiences behind you. Confidence does not equal self-importance. Self-importance is born ...
【简答题】Besides physical appearance, self-confidence can be greatly influenced by ______.
【单选题】Directions: Read the following text about how to improve self-confidence. Five sentences have been removed from the text. Choose the best sentence from the list A-F on the next page to fill in each of...
A.
There are a few basic tips to help make you into a self-confident human being.
B.
One method that can help to improve self-confidence is through the use of Hypnosis.
C.
Try new things that excite you.
D.
Even the most self-confident people have certain issues.
E.
We aim to help people become more self-confident in life.
F.
Developing self-confidence can be hard, especially if you are starting with little or no confidence.25. __________
【单选题】Self-confidence can be cultivated by______.
A.
self-improvement
B.
knowing yourself
C.
self-reliance
D.
self-discipline
【简答题】下列经济业务引起资产与所有者权益同时增加的是（ ）。
【简答题】Nothing succeeds like confidence. When you are truly confident, it radiates from you like sunlight, and attracts success to you like a magnet (磁铁) . Besides, those who are self-confident can in turn i...
【单选题】What can help teens gain self-confidence?
A.
Respect from their friends based upon the things teens can do well.
B.
Respect from their parents based upon the decisions teens can make on their own.
C.
A good set of values that can teach them the true meaning of happiness.
D.
Rebellion and discovery of what is really important.
【简答题】第二章第一课时课后作业.doc
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