Principles of Biology
Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 20, Problem 10TY

Evolutionary changes in the rate or timing of developmental events (heterochrony) explain

  1. why mammals are more complex than fruit flies.
  2. why human skulls and jaws are different sizes than those of chimpanzees.
  3. why some birds have webbed feet and others do not.
  4. how new species arise due to adaptation to local environments.
  5. how polyploidy can promote speciation.

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