How does the human brain relate to the nucleus of a cell? a.) they are each the control center b.) they are both necessary for all plants and animals to survive c.) they each support their structures d.) they are each found in an animal's body.

A.) They are each the control center since the human brain sends out of directions or instructions. They do that by stimulating the nerves along the nervous system while the nucleus is the control center of the cell.

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.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.