This quiz set includes four different versions (A, B, C, & D) in order to reduce the occurrence of cheating. The answers to multiple choice items are in different orders, and answers to a decoding question are different on each version. This set includes a short pretest and post-test that can be given before and after instruction to assess student growth. This set also includes a set of student notes and answer keys for all quiz versions, the pretest & the post-test. Concepts include: protein synthesis, codons/anticodons, messenger & transfer RNA, transcription/translation, DNA structure, amino acids, and mutations.