Which of the five common ancestors, labeled V-Z, has been least successful in terms of the percent of its derived species that are extant?
A) V
B) W
C) X
D) Y
E) Z
Answer: B
Which of the five common ancestors, labeled V-Z, has been least successful in terms of the percent of its derived species that are extant?
A) V
B) W
C) X
D) Y
E) Z
Answer: B