Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1259188132
ISBN 13: 978-1-25918-813-8

Chapter 19 - Cellular Mechanisms of Development - Review Questions - Understand - Page 397: 7

Answer

B.

Work Step by Step

Nuclear reprogramming returns a cell and its nucleus to a more embryonic, undetermined state (B.). It does not happen normally (A.) or involve extra DNA (C.). D. is wrong because nuclear reprogramming has been repeatedly demonstrated with mammalian cells, as with Dolly the sheep.
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