What are the three base sequences on a tRNA molecule called? Introns

Exons

Codons

Anti-Codons

proteins are built from smaller units called and amino acids which are specified by 3 nucleotide mRNA sequences called Codons each Condon represents a particular amino acid and the each condone is recognized by a specific tRNA. have a nice day

option a and d is the correct answer

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above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.