Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 40, Problem 11TYK
Summary Introduction
To review:
The reason behind cerebrospinal fluid (CSF) being analyzed instead of blood during meningitis condition.
Introduction:
Meninges are the connective tissues that encircle the brain and the spinal cord. The cranial meninges are present surrounding the brain and the spinal meninges are present surrounding the spinal cord. There are total three meninges that are common in the spinal cord as well as the brain, namely, dura mater, pia mater, and arachnoid mater. The infection of these meninges leads to their inflammation, which is known as meningitis.
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Martin Wikelski and L. Michael Romero (Body size, performance and fitness in Galápagos marine iguanas, Integrative and
Comparative Biology 43 [2003]:376-86) measured the snout-to-vent (anus) length of Galápagos marine iguanas and observed
the percent survival of different-sized animals, all of the same age. The graph shows the log snout-vent length (SVL, a
measure of overall body size) plotted against the percent survival of these different size classes for males and females.
Survival (%)
100-
80-
60-
40-
20-
0+
1.9
T
2 2.1
2.2 2.3 2.4 2.5 2.6 2.7
Log SVL (mm)
19) Examine the figure above. What type of selection for body size appears to be occurring in these marine iguanas?
A) directional selection
B) stabilizing selection
C) disruptive selection
D) You cannot determine the type of selection from the above information.
3
Chapter 40 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 40.1 - Distinguish between a nerve net, nerves, and nerve...Ch. 40.1 - Prob. 2SBCh. 40.2 - Prob. 1SBCh. 40.3 - Prob. 1SBCh. 40.3 - What is the difference between gray matter and...Ch. 40.3 - Prob. 3SBCh. 40.3 - Prob. 4SBCh. 40.4 - Prob. 1SBCh. 40 - Prob. 1TYKCh. 40 - Prob. 2TYK
Ch. 40 - Prob. 3TYKCh. 40 - Prob. 4TYKCh. 40 - Prob. 5TYKCh. 40 - Which one of the following structures participates...Ch. 40 - Prob. 7TYKCh. 40 - Prob. 8TYKCh. 40 - Prob. 9TYKCh. 40 - Prob. 10TYKCh. 40 - Prob. 11TYKCh. 40 - Prob. 12TYKCh. 40 - Discuss Concepts In the 1930s and 1940s,...Ch. 40 - Prob. 14TYKCh. 40 - Prob. 15TYKCh. 40 - Prob. 1ITDCh. 40 - Prob. 2ITDCh. 40 - Prob. 3ITDCh. 40 - Prob. 4ITD
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