ANFS 345 Lecture 1: 8/28/18

• School: University of Delaware
• Department: Animal and Food Sciences
• Course: ANFS 345
• Professor: Ryan Arsenault

Document Summary

The study of body functions relative to an animal"s environment. Increase in frequency of genes leading to traits that enhance ability to survive and reproduce. The mechanism of trait produced by selection within a given environment. Knowing mechanism does not necessarily contribute to understanding of reason. Knowing reason does not necessarily imply mechanism. This approach shows similarities and differences across animal species for a given function. Internal constancy in the face of external change. Interconnected systems that adjust to maintain a steady state. Internal held constant in spite of external change. Cells may be damaged due to change in internal environment. Level at which the controlled variable should be maintained. Response signal that returns parameter toward steady state. Response signal that compounds original deviation from steady state. Body change in individual over minutes to hours. Body change in an individual over days to years. Change in population over generations (genotypic changes) Physiology can vary even when environment stays the same.