Which of the following could be considered the most recent common ancestor of living tetrapods?
A) a sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates
B) an armored, jawed placoderm with two pairs of appendages
C) an early ray-finned fish that developed bony skeletal supports in its paired fins
D) a salamander that had legs supported by a bony skeleton but moved with the side-to-side bending typical of fishes
E) an early terrestrial caecilian whose legless condition had evolved secondarily
A recent study found that female baboons that groom each other are more likely to come to each other
Models of some representative proteins drawn to a common scale
Common skin signs are often evidence of an illness or disorder. A fissure is a crack-like sore or ...
The coagulation cascade. Both the intrinsic pathway and extrinsic pathway lead to a common pathway ...
Common Prefixes Cont.
Basalt is the most common type of stone used in hot stone therapy.