Answer
(b) DNA and a common genetic code
Work Step by Step
All livings things contain DNA, which codes for everything that makes up the organism. All living organisms are related to each other in some way through the sequences in their DNA.
Campbell Biology: Concepts & Connections (9th Edition)
by Taylor, Martha R.; Simon, Eric J.; Dickey, Jean L.; Hogan, Kelly A.; Reece, Jane B.
Published by
Pearson
ISBN 10:
0-13429-601-X
ISBN 13:
978-0-13429-601-2
Chapter 1 - Review - Page 18: 5
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