Biology 2010 Student Edition

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

Chapter 12, DNA - Assessment - 13.1 RNA - Understand Key Concepts/Think Critically - Page 386: 5

Answer

Introns are segments on a messenger RNA strand that will be cut out before the mRNA strand leaves the nucleus. Exons are the pieces of mRNA that are left over after the introns are taken out. The exons are then spliced together to form an mRNA strand that is able to leave the nucleus and travel to the ribosomes for translation.

Work Step by Step

Introns are segments on a messenger RNA strand that will be cut out before the mRNA strand leaves the nucleus. Exons are the pieces of mRNA that are left over after the introns are taken out. The exons are then spliced together to form an mRNA strand that is able to leave the nucleus and travel to the ribosomes for translation.
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