Answer
Converge - Gather and narrow.
Extend - Spread along a line.
Work Step by Step
The convergence creates a narrower notochord which, with the same number of cells, extends into a longer shape.
Campbell Biology (11th Edition)
by Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Published by
Pearson
ISBN 10:
0-13409-341-0
ISBN 13:
978-0-13409-341-3
Chapter 47 - 47.2 - Concept Check - Page 1055: 1
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