What do you call the group of 3 bases that is complementary  to a specific Condon of mRNA
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It is called ANTICODON. This is a triplet code present on the tRNA  and helps in recognition of the specific codon on mRNA to bind with it.
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do you mean triplet code or triplet codon ?? 
or anticodon to be exact?
or anticodon to be exact?
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anticodon...that is what it is called.
      