Which of the following molecules|are involved in gene expression? Choose all that apply. O RNA polymerase O Splicing O Primer O Origin O Stop codon O Start codon O Parental strand O IRNA O Okazaki fragment O Bubble O Fork O Leading strand O Helicase O DNA polymerase OA site Amino acid attachment site OPrimase O Primer O Terminator sequence

What is the most likely consequence of a single base mismatch error made by RNA polymerase? OA permanent change in the genome All of these answers are likely consequences O. An inability to recognize the transcription start site O An increase in gene expression levels An amino acid change in a protein

The following sequence of DNA is part of the normal, wild-type gene.   5'TAC CGG GAC TTG AGC CGA TAG 3'   A deletion occurs during DNA replication, causing the guanine shown in red to be removed from the nucleotide strand. What effect is this most likely to have on the final protein?   Multiple Choice   The deletion of the G will cause a single amino acid substitution in the codon in which it occurs.   The deletion of the G will cause a frameshift, so that the first amino acid after the mutation will change but the rest of the protein is unaffected.   The deletion of the G will cause a frameshift, resulting in a premature stop codon and a truncated protein.   The deletion of the G will cause a frameshift, resulting in the loss of the normal stop codon and an abnormally long protein with an altered amino acid sequence.   The deletion of the G will not have an effect on the final protein.

Which of the triplets below is a possible anticodon for a tRNA that transports Leucine (Leu) to a ribosome? Second letter C UGU cys UCU1 UCC UCA UCG UAU Tyr UACS Ser UAA Stop UGA Stop A UAG Stop UGG Trp UUU UGCS Phe UUC U UUA UUG FLeu CAU HiS CGU] CUU CUC Leu CCU ССС CCA CCGJ CACS CGC Arg CGA CAA GIn Pro C CUA CUG J CAG S CGG AUU AUC lle AUA AAU Asn AGU ser ACU АСС Thr ACA AAC AAA ys AGA Arg AAG J AGC AUG Met ACG Lys AGG J GUU GUC CUA Val GAU ASP GCU GACJ GCC FAla GGU] GGC CGA Gly CCA C CAA M UCAG Third letter UCAG UCAG First letter