Enhancers are regions that
A.bind RNA polymerase
B.are adjacent to the TATA box
C.are CAT box binding proteins
D.modulate transcription
Transcription of each set of rRNA genes by RNA polymerasel produces
A.a single 45S rRNA precursor molecule
B.a single 5S rRNA precursor molecule
C.a single 18S rRNA precursor molecule
D.a single 28S rRNA precursor molecule
Which of these restriction enzymes produce blunt ends?
A.SaII
B.EcoRV
C.XhoI
D.HindIII