Biochemical similarities modern day scientists use to show descent from common ancestry?

I'm not exactly sure what your asking

I think its the pedigree??

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass

The best way to tell its true color is to look at the minerals streak