Discover the fascinating and intricate world of biology with Expert Biology, a detailed doctoral-level textbook packed with Ph.D. level content, diagrams, references, and comprehensive problem sets. From advanced molecular biology to genetics and genomics, cell biology and signaling, developmental biology and evolution, physiology and adaptation, ecology and environmental biology, microbiology and immunology, to biotechnology and bioinformatics, this textbook provides an in-depth exploration of complex biological concepts. Engaging and thorough, this textbook is an essential resource for doctoral-level students and aspiring researchers.