6.______ is the first amino acid in proteins of bacteria. (A) alanine (B) N formyl methionine (C) glycine (D) leucine.

(5) Which of the followings is most likely to lead to a loss of gene function? (A) A missense mutation in the open reading frame (B) A frameshift mutation in the coding region (C) A change from a T to C in the promoter region (D) A change from a TAA codon to a TAG codon in the coding region (E) A sequence change in the 3' untranslated region