发育生物学是在（）学、遗传学、细胞生物学和分子生物学的基础上发展起来的。

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

异花授粉植物的简易制种法有（），（），（）。

杂交种子生产方法：（）杂交制种、（）制种、利用（）制种、利用（）制种、利用（）制种。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

种族是指在生理、体态、（）上和上具有共同生物学和遗传学特征的人群。

什么叫做三系二区制种法？

水稻三系制种的技术要点有哪些？

动物遗传学

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。