问题
单项选择题
与辅阻遏物结合后才与操纵基因结合的成分是
A.辅阻遏蛋白
B.操纵基因
C.CAP
D.阻遏蛋白
答案
参考答案:A
与辅阻遏物结合后才与操纵基因结合的成分是
A.辅阻遏蛋白
B.操纵基因
C.CAP
D.阻遏蛋白
参考答案:A
从方框中选择恰当的选项完成下列对话,其中有两个多余选项。 | |
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A: Many new animals are in the zoo. Do you know? B: Oh? ______1_______ A: Pandas, lions, monkeys, giraffes and dolphins. B: Let's go and see them. A: OK. ______2_______ B: I want to see pandas first. A: ______3______ B: Because they are very cute. ________4______ A: I like dolphins. B: _______5________ A: Because they are clever and cute. |