Use Figure 26.1 to answer the following questions.

Figure 26.1
-Which extinct species should be the best candidate to serve as the outgroup for the clade whose common ancestor occurs at position 2?
A)A
B)B
C)C
D)D

Question

Use Figure 26.1 to answer the following questions.
  
Figure 26.1
-Which extinct species should be the best candidate to serve as the outgroup for the clade whose common ancestor occurs at position 2?
A)A 
B)B 
C)C 
D)D

Quizplus · Accepted Answer

An outgroup should be a species that is least closely related to the clade being studied. In this case, the common ancestor at position 2 is shared by species A, B, and C. Species D and E diverged earlier, making them more distantly related and better outgroup candidates. However, species D differs from the other four species in having a different structural feature (missing the black stripe), making it the best outgroup candidate.

Use Figure 26.1 to Answer the Following Questions