In the northern hemisphere the magnetic compass will normally indicate a turn toward the west.

in the northern hemisphere the magnetic compass will normally indicate a turn toward the west if "A right turn is entered from a North Heading"

Explanation:

The face towards which the magnetic needle aligns are north and south magnetic poles. The magnetic compass does not work in southern hemisphere, because of the fact opposite poles attract. Exactly while turning right due to the opposite force the magnetic needle will deviate. Magnetic deviations do occur because of the presence of magnetized iron in the ship and also in aircraft. The magnetic north is not the actual or the exact north  pole.

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