問題詳情
27. Why do some scientists believe that RNA, rather than DNA, was the first genetic material?
(A)All the proto-cells on early Earth contained RNA.
(B)RNA contains uracil in place of thymine.
(C)RNA could have evolved into DNA.
(D) RNA can replicate more accurately than DNA.
(E)RNA has both information storage and catalytic properties.
(A)All the proto-cells on early Earth contained RNA.
(B)RNA contains uracil in place of thymine.
(C)RNA could have evolved into DNA.
(D) RNA can replicate more accurately than DNA.
(E)RNA has both information storage and catalytic properties.
參考答案
答案：E
難度：適中0.571429
統計：A(6),B(2),C(4),D(0),E(20)
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