Refer to the figure. Based on this phylogenetic tree, we can conclude that gizzards
A) evolved after feathers.
B) were absent in the common ancestor of crocodiles and pigeons.
C) are a synapomorphy uniting pigeons and crocodiles.
D) evolved before scales.
E) were present in the common ancestor of lizards and pigeons.

Question

Refer to the figure.  Based on this phylogenetic tree, we can conclude that gizzards
A) evolved after feathers. 
B) were absent in the common ancestor of crocodiles and pigeons. 
C) are a synapomorphy uniting pigeons and crocodiles. 
D) evolved before scales. 
E) were present in the common ancestor of lizards and pigeons.

Quizplus · Accepted Answer

The Answer of Refer to the figure.  Based on this phylogenetic tree, we can conclude that gizzards
A) evolved after feathers. 
B) were absent in the common ancestor of crocodiles and pigeons. 
C) are a synapomorphy uniting pigeons and crocodiles. 
D) evolved before scales. 
E) were present in the common ancestor of lizards and pigeons.

Refer to the Figure