
Concept explainers
To determine: The kind of experiment that would be used to test whether the correlation both within and among species between two allometrically related traits is due to natural selection or due to developmental genetic constraints.
Introduction: Allometric growth means the differential growth rate of an organism’s different dimensions or parts during its ontogeny. For example, the head of a human grows at a slower rate during postnatal growth than the legs that grows at a faster rate.
To explain: The inference about the underlying genetic architecture of traits whose allometric relationships do not vary.
Introduction: Allometric growth means the differential growth rate of an organism’s different dimensions or parts during its ontogeny. For example, the head of a human grows at a slower rate during postnatal growth than the legs that grows at a faster rate.
To explain: The inference about the underlying genetic architecture of traits whose allometric relationships vary.
Introduction: Allometric growth means the differential growth rate of an organism’s different dimensions or parts during its ontogeny. For example, the head of a human grows at a slower rate during postnatal growth than the legs that grows at a faster rate.

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Chapter 15 Solutions
Evolution, Fourth Edition (looseleaf)
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