試題詳解

22.Which of the following statement is       not true       for eukaryotic gene promoters?
(A) For the promoters recognized by RNA polymerase II (class II promoters), TATA-less promoters are commonly found in housekeeping and developmentally regulated genes
(B) Initator is required for optimal transcription of some class II promoters; one classic example is the adenovirus major late promoter
(C) Class I promoters (the promoters recognized by RNA polymerase I) are quite variable in sequence across species, while they all contain a conserved AT-rich initator (rINR)
(D) Some of the class I promoters are located entirely within the genes themselves, one example is the 5S rRNA gene
(E) Some of class III promoters (the promoters recognized by RNA polymerase III) resemble those found in class II genes, one example is the 7SL gene