Question

Page 201 11.4. Give an example of a homologous or vestigial trait, and explain how such traits support the theory of common descent. Watch the animation on vestigial traits, and then answer the question. The animation covered how vestigial traits provide evidence for evolution. Which of these examples describe vestigial traits?

Answer 1

Homologous

Explanation:

• Two or more species share a unique physical feature, for example, an unpredictable bone structure or a body plan, they may all have acquired this component from a typical predecessor.
• Physical highlights shared because of developmental history (a typical progenitor) are said to be homologous.  
• The front flippers of whales and the forelegs of four-legged vertebrates like canines and crocodiles are completely gotten from the equivalent tribal tetrapod structure.