Biology encompasses all levels of biological organization, but scientists can specialize in studying a certain level. Which specific level(s) might a scientist might focus on if investigating genetic links to certain types of cancer?

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

4, two dominant and two recessive