Biology: The Unity and Diversity of Life (14th Edition)

Published by Brooks/Cole Publishing Co.
ISBN 10: 1305073959
ISBN 13: 978-1-30507-395-1

Chapter 4 - Data Analysis Activities - Page 75: 1


In the image (Figure 4.24) the affected male (A) shows a cross section of a sperm's flagella that has tissue damage. The image shows less darkened areas indicating that the bacteria causing the infection has damaged the dynein protein that would get the flagella to move/propel the sperm. The unaffected male (B) shows a cross section of a sperm that we must assume has normal dynein functioning and clearly shows a greater area of darkness, indicating normal flagella function due to normal dynein function.

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