During meiosis, the alleles on each gene will separate individually into the gametes. this means that no matter what alleles were paired together in the parent, each gamete receives one allele. mendel stated this to be the law of ** a independent assortment b gene regulation c gene assortment d independent segregation

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.