HORTICULTURE

Detailed explanation-1: -Because flies rapidly discover a body and their development times are predictable under particular environmental conditions, the time of death can be calculated by counting back the days from the state of development of flies living on the corpse.

Detailed explanation-2: -Blow flies and flesh flies are the most useful crime scene insects for determining the postmortem interval, or time of death. Through laboratory studies, scientists have established the developmental rates of necrophagous species, based on constant temperatures in a laboratory environment.

Detailed explanation-3: -Blow flies are among the first insects to discover and colonize on human remains. The larvae of blow flies are also used extensively in forensic entomology, predominantly to establish the minimum time elapsed since death.

Detailed explanation-4: -Forensic investigators typically use the well-known stages of blowfly development on cadavers as a biological clock to determine the time since death, or the postmortem interval.