Which of the following is a characteristic of meiosis but not of mitosis? a. involves only single-celled organisms b. produces four daughter cells c. separates one existing cell into two identical new cells d. involves only one cell division

That would be B. produces four daughter cells. Meiosis creates four haploid cells (called gametes) and mitosis creates two diploid cells.

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