Bio 311C, Buskirk
Handout 11 – Transcription and the genetic code
for Oct 25, 27
Read Chapter 17, beginning on page 328 (NOT:
Figures 17.3, 17.4, 17.7,
17.8, 17.9, 17.10, 17.11, 17.12, 17.17, 17.18, 17.20, 17.21, 17.22, 17.24, and especially 17.25
Concept checks 17.1, 17.2, 17.3, 17.5, 17.6.
3-27. Compare and contrast each pair:
(a) DNA and RNA nucleotides & structure, (b) DNA polymerase
and RNA polymerase, (c) replication (of DNA) and transcription; (d) primer and promoter.
3-28. What does it mean to say that information flows from DNA to RNA to protein?
3-29. Compare and contrast replication and transcription: In what part of the euk. cell does each occur?
At what part of the DNA does each begin?
What is the enzyme involved?
Can that enzyme
initiate a chain?
What does the enzyme add in order to extend the chain, and to what?
What is the enzyme that accomplishes transcription?
How does it recognize
where to begin making RNA?