52. There are 61 mRNA codons that specify an amino acid, but only 45 tRNAs. This is best explained by the fact that
(A) some tRNAs have anticodons that recognize two or more different codons.
(B) the rules for base pairing between the third base of a codon and tRNA are flexible.
(C) inosine can hydrogen-bond with G, C, U or A.
(D) A and B are true.
(E) A, B, and C are true.

答案：登入後查看
統計： A(3), B(4), C(0), D(28), E(8) #2308382

詳解 (共 1 筆)

#4896447

The first two bases are identical (CG) and form strong Watson-Crick base pairs with the corresponding bases of the anticodon, but the third base (A, U, or C) forms rather weak hydrogen bonds with the I residue at the first position of the anticodon. from L7

inosine不會和G形成氫鍵



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