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Figure 7 | Biology Direct

Figure 7

From: On origin of genetic code and tRNA before translation

Figure 7

Possible tRNA precursors: variants of (11 + 7 = 18) elongation. Variant A represents the canonical acceptor arm. Variant B could also be used in primordial translation. Variant C might represent even the earlier stage of an RNA replisome [45] with pre-tRNAs functioning as donors of trinucleotides for growing complementary RNA strand during replication.

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