Final answer:
Fluctuating asymmetry is a concept in Biology that deals with small, random variations in bilateral symmetry of organisms that may be caused by environmental or genetic factors.
Step-by-step explanation:
Fluctuating asymmetry (F.A) relates to the field of Biology, specifically to developmental biology and the study of phenotypic variation. Fluctuating asymmetry refers to small, random variations in symmetry among bilateral organisms, indicating the developmental stability of an individual. Primarily, it looks at how certain environmental or genetic stressors can affect development, resulting in slight asymmetries, such as one foot being larger than the other or the condition known as heterochromia iridium where the irises of the eyes are different colors. These variations can be insignificant or can have implications for the survival and reproductive success of an organism within a population.