The movement (track along the ground) of middle latitude cyclones (which in turn are driven by the westerlies) is "steered" from above by

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

asthenosphere and convection

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