True or False: It is impossible for a gene to affect multiple traits in genetics.

The assertion that it is impossible for a gene to affect multiple traits is false. Genes can have pleiotropic effects, meaning a single gene can influence multiple phenotypic traits. This is a well-established phenomenon in genetics. For example, a mutation in a single gene might affect not just one characteristic, such as flower color in plants, but also traits like plant height or disease resistance.

The complexity of genetic interactions and the way genes can influence biological pathways allow for multiple outcomes from a single genetic change. Pleiotropy is common and plays a significant role in a variety of genetic conditions, where one gene mutation can lead to multiple symptoms or traits being affected. Thus, it is entirely plausible for a gene to contribute to more than one trait, making the statement that it is impossible incorrect.