Comparative Genomics is the field of study that compares the genomes of different organisms to understand their similarities and differences. By analyzing the DNA sequences of various species, scientists can identify conserved genes, evolutionary relationships, and functional elements. This helps in understanding how species have evolved over time and how they adapt to their environments. Researchers use bioinformatics tools to analyze large datasets from different genomes, allowing them to draw conclusions about genetic functions and evolutionary processes. Comparative genomics can also aid in identifying genes related to diseases, which can be crucial for developing new treatments and therapies in medicine.