PLEASE HELP What are the physical characteristics called that are used to compare and contrast organisms? A) morphological traits
B) genetic characteristics
C) genotypic features
D) embryological anatomy
please choose one answer

c: genotypic features

Explanation:

if is is incorrect then the awnser would be B

the answer to your question is:

c. complementary base-pairing

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands