12. Muscle cells and nerve cells in one species of animal owe their differences in structure to A) having different genes. paired bas B) having different chromosomes. C) using different genetic codes. m heses D) differential gene expression. E) having unique ribosomes. AMlo noaslvdtam (A AMClonoitaotilqna (8 nolistum to sg nolitenent () A1o oqvi noizovensr (C niotong 3o aoinlviodqeoda (3 lat90 nl vlno baenonqo eong mareso sa vdw adolus al 81 13. If you were to observe the activity of methylated DNA, you would expect it to (A A) be replicating. B) be unwinding in preparation for protein synthesis. C) have turned off or slowed down the process of transcription. D) be very active in translation. E) induce protein synthesis by not allowing repressors to bind to it.w orelai gaivrollol adT.et esqer lloo Insnoltia O ASl odi oluolom 102esIqon lo gnibnid (A also be asmed a Two potential devices that eukaryotic cells use to regulate transcription are DNA Ha to guibaiE (O mozodinylog to noitermo (a ovoda sdi to lIA ( 14. and histone A) methylation; amplification B) amplification; methylation C) acetylation; methylation D) methylation; acetylation E) amplification; acetylation ACCATG to noitaluge lonoitelanrateog to olgenezs na al gaivolto onT.es vhonghuto lohio (A ced of wild type apd oubni ns vd noltginoat to foino (8 Munt GAACABfto gniailye svitamsilA (O Wild type In both eukaryotes and prokaryotes, gene expression is primarily regulated at the level atorg lo noitelyioegod9 (3 15. of A) transcription. yd soheta eseses sbimond melbidh3.15 a02od boning noswied ahoeni (A 2seed leotan dbiw aotoqmoo (B 232od mot sqrony onima esvoms () e nueleotide socuences of willd type and it's matant a bri uso ( omib oniemyds nnot (3 B) translation. C) MRNA stability. D) MRNA splicing. E) protein stability. 16. Which of the following statement about enhancers is correct? A) They contain unique base sequence called TATA boxoitatun oD golsna adS B) They are located only in 5'-flanking regions d boiaq mowted ahseni (A e9d lanuten diiw asqmos (8 C) They are located only in introns D) They are present in a variety of locations and are functional in any orientations leod be oeusa ( onibsimvili mdl (3 3