In the domain eukarya, which physical trait is used to classify organisms?

a)possession of a cell wall
b)cells that do not contain a nucleus
c)cells that contain a nucleus
d)lack of a cell wall

the correct answer is C, the cells that CONTAIN a nucleus.

hope this helps.  :)

C) cells that contain a nucleus

The domain Eukarya involves all the eukaryotic organisms such as protists, animals, plants and fungi. This includes group of single celled or simple multi cellular organisms. All these organism exhibit cells with nucleus and membrane bound organelles.

answer; i believe the answer is (polygenic inheritance;

this would be called the responsiveness