Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 12, DNA - Assessment - 13.4 Gene Regulation and Expression - Understand Key Concepts/Think Critically - Page 388: 27



Work Step by Step

Option a. is incorrect. The promoter is a region on the DNA molecule where RNA polymerase binds to start the process of transcription. Option c. is incorrect. An intron is a portion of the mRNA that does not code for a protein and is cut out of the transcribed mRNA to produce a final mRNA strand that will be used to make the protein. Option d. is incorrect. An allele is a form of a gene. Option b. is correct. An operon is a group of genes that are usually translated together because the proteins they code for have related functions.
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