Final answer:
The complete metamorphosis of a blow fly from egg to larva, pupa, and then to an adult takes approximately two to three weeks, with variations due to environmental conditions.
Step-by-step explanation:
Life Cycle of a Blow Fly:
Blow flies, like many insects, undergo complete metamorphosis. This life cycle consists of several distinct stages: egg, larva, pupa, and adult. Starting from an egg, the blow fly's first stage is as a larva, commonly referred to as a maggot. This larval stage typically lasts about 4 to 10 days, depending on environmental conditions such as temperature and humidity. After sufficient growth and feeding, the larva develops into a pupa. This pupa stage can range from about 4 to 14 days. Finally, the adult blow fly emerges from the pupal case. The entire process from egg to adult usually completes in approximately two to three weeks, again depending significantly on environmental factors.