1. Pleiotropism refers to the phenomenon where a single gene has multiple effects on an organism's phenotype.
(Pleiotropism指的是一个基因对一个生物个体的表型产生多种影响的现象。)
2. The pleiotropism of the gene responsible for coat color in cats can also affect their eye color and temperament.
(对猫的被毛颜色负责的基因的多效性也会影响它们的眼睛颜色和性格。)