The peak of a transverse wave is called the

amplitude

Explanation:

the distance between 2 peaks (or 2 troughs) is called a wavelength. the deepest part of a trough or the highest part of a peak is called the amplitude.

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

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