A salt or ester of phosphoric acid, containing PO43− or a related anion or a group such as —OPO(OH)2.
I believe that the answer is D, The four have molecular similarities, but have their own unique traits. A phylogenetic tree is a diagram like the one shown below which represents the relationship among various biological organisms/species or other entities based upon similarities and differences in their physical or genetic characteristics.
These sorts of studies can help researchers determine the relative importance of nurture and nature in determining a trait. Nature here would refer to genetics passed down to an individual from its parents, whereas nurture refers to the environment the individual is exposed to.
Bauplan is the assembly of the body structure which is common in the organisms belonging to the same phylum. The Same bauplan determines that a body part of the organisms are same and they will be in the same phylum in the Evolution also. Bauplan includes symmetry, segmentation, and limb disposition.