Final answer:
Etiology and manifestation conventions appear in Biology when studying diseases and their characteristics. These conventions help scientists understand the causes (etiology) and the signs and symptoms (manifestations) of different diseases.
Step-by-step explanation:
Etiology and manifestation conventions appear in the field of Biology when studying diseases and their characteristics. These conventions help scientists understand the causes (etiology) and the signs and symptoms (manifestations) of different diseases.
For example, in the study of infectious diseases, etiology conventions may involve identifying the causative agent, mode of transmission, and treatment options. Manifestation conventions focus on recognizing the specific signs and symptoms exhibited by patients.