Hardy-Weinberg equilibrium

In humans, the ability to taste the chemical phenylthiocarbamide (PTC) is primarily controlled by a single gene that encodes a bitter taste receptor on the tongue. Tasters, or individuals that can taste PTC, have at least one copy of the dominant allele ($T$‍). Non-tasters, or individuals who cannot taste PTC, have two copies of the recessive allele ($t$‍).

The numbers of tasters and non-tasters in two separate human populations are shown in the table below.