HUMAN BIOLOGY + VIRTUAL PAC
HUMAN BIOLOGY + VIRTUAL PAC
16th Edition
ISBN: 9781264359028
Author: Mader
Publisher: MCG/CREATE
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Chapter 23, Problem 1TC

Bipedalism has many selective advantages, including the increased ability to spot predators and prey. However, bipedalism has one particular disadvantage—upright posture leads to a smaller pelvic opening, which makes giving birth to an offspring with a large head very difficult. This situation results in a higher percentage of deaths (of both mother and child) during birth in humans compared to other primates. How can you explain the selection tor a trait, such as bipedalism, that has both positive and negative consequences for fitness?

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HUMAN BIOLOGY + VIRTUAL PAC

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