3 Which is of the following statements best describes the structure, or makeup, of a codon?
A. A codon is a 3-letter nucleotide sequence found on the tRNA.
B. A codon is a growing polypeptide chain.
C. A codon is a gene sequence found on the DNA strand.
D. A codon is a 3-letter nucleotide sequence found on the mRNA.
4.What is true regarding genes and DNA?
A Each DNA strand contains identical genes.
B The DNA only transcribes the genes that it needs at specific times.
C Both A and B
D None of the above
