A three-nucleotide sequence of DNA or mRNA that specifies a particular amino acid or termination signal.Group of answer choicestranscription unitcodonintronanticodonexon

A three-nucleotide sequence in mRNA, that codes for a particular amino acid, is called a(n) .

A nucleic acid that codes for sequences of amino acids in a protein is a(n):Group of answer choicescodontripletanticodonOkazaki fragmentgene

A specific nucleotide sequence in the DNA of a gene that binds RNA polymerase, positioning it to start transcribing RNA at the appropriate place.Group of answer choicescodonexonintronanticodonpromoterTATA boxNext

The mRNA nucleotide triplets are called _____, and they are customarily written in the _____ direction.Group of answer choicesanticodons … 5’→3’anticodons … 3’→5’codons … 5’→3’codons … 3’→5’Next

The regions of DNA or RNA that are eventually expressed and translated into amino acid sequences are _____.Group of answer choicesexonsintrons