True or false: Most genes are specific to one species and are not found in animals of another species or genus.

The assertion that most genes are specific to one species and not found in animals of another species or genus is false. In reality, many genes are conserved across different species, especially among closely related organisms. This conservation indicates that certain genes have crucial functions that are similar across various taxa, allowing them to perform essential biological processes. For instance, fundamental metabolic pathways, developmental processes, and cellular functions often utilize the same or similar genes across a wide range of species, from bacteria to mammals.

Furthermore, genetic studies and comparative genomics have shown that while some genes may evolve or replicate in a species-specific manner, a substantial portion of the genome remains conserved due to the critical roles these genes play in survival and reproduction. Thus, the understanding of genetics in a broader biological context reveals a shared genetic heritage among various organisms, supporting the idea that many genes are not exclusive to one species.