Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 14 - DNA: The Genetic Material - Figure 14.17 - Inquiry Questions: 1

Answer

DNA ligase glues together separate pieces of DNA, most usually in the case of the lagging strand when DNA is copied. That strand is copied one small piece after another as the double helix is opened bit by bit. Ligase glues those pieces together by making the covalent bonds of the phosphate backbone between successive pieces of the lagging strand.

Work Step by Step

To get this answer, look at ligase--its name means that it is an enzyme that ligates or ties together. Then consider where it is mentioned in the text with regard to DNA copying and the lagging strand.
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