The 28S, 18S and 5.8S Forms of RRNA

Multiple Choice

The 28S, 18S and 5.8S forms of rRNA:

A) are encoded by three distinct genetic loci that are coregulated.
B) are encoded by three distinct genetic loci that are differentially regulated according to requirements for each rRNA.
C) are encoded by a single genetic locus whose transcript is subsequently processed.
D) are encoded by a single genetic locus whose transcript is differentially amplified.
E) are the result of alternate splicing of a single transcript.