Chemical equilibrium results if rate of forward chemical reaction equals that rate of reverse chemical reaction.
Explanation:
Forward chemical reaction forms product from the substrate while the reverse chemical reaction forms substrate from the product. When the rate of forward reaction becomes equal to the rate of the reverse reaction, rates of formation of substrate and product becomes equal. This is called chemical equilibrium.
The answer would be D. Huntington's disease presents symptoms in humans after many have already reproduced; therefore, they are unaware that they passed on Huntington's disease.
