A precursor gene is a gene that gives rise to another gene or genetic material. It is also known as a parental gene, a messenger RNA (mRNA), or an mRNA precursor. There are several synonyms for the precursor gene, including the progenitor gene, the ancestor gene, the forerunner gene, and the source gene. These terms are often used interchangeably to describe a gene that is responsible for producing a specific protein or molecule, and can be considered a starting point for genetic material and its expression. Understanding the importance of precursor genes is critical for the study of genetics and biological processes.