Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 46 - 46.5 - Concept Check - Page 1038: 1


hCG production is crucial in the first trimester but drops off in the second.

Work Step by Step

Until the development of the placenta, the corpus luteum is crucial in supporting the pregnancy.
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