How are proteins regulated after translation? active proteins can be inactivated by post‑translational modification existing mRNA molecules can be degraded to produce fewer proteins proteins that are no longer required can be transported out of the cell inactive proteins can be activated by phosphorylation proteins can be tagged with small molecules and subsequently degraded

inactive proteins can be activated by phosphorylation

Explanation:

Proteins are regulated after translation by the non-covalent binding of small molecules. These molecules include amino acids or nucleotides. A change in the conformation and thus, the activity of the protein is usually achieved when this occurs.

Proteins could also be regulated by phosphorylation which is the addition of phosphate groups of specific amino acids on the protein.

this is math not biology xd

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).