A.The sheep was chosen as an ideal subject because of its genetic development, not for its precedence as a research subject.
B.The human embryo comes to rely upon its own genetic code at an earlier stage of development than the mice embryo.
C.The unfertilized sheep egg acquires a limitless supply of protein from the mother' s ovary.
D.The earlier the foreign nucleus assumes genetic control of the embryo, the more successful it will likely be.
E.The foreign nucleus transplanted to an embryo may be consider "older" than the nucleus it replaced.
第5题
热电偶测温时要进行冷端温度补偿,有哪些补偿方法()。
A计算修正法
B冷端补偿器法
C冷端的延伸
D以上全对
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