What organisms have contributed most to human biology?
Is it monkeys? Rabbits? Pigeons? Mice?
If biologists had to choose one, quite a few of them would likely give this answer—fruit flies.
Since the time of Morgan, fruit flies have been extensively used.
The advantages of fruit flies are too numerous to count. As a species of the order Diptera, like most of their relatives, they have the advantages of "high reproductive ability and short life cycle."
Moreover, like most Diptera insects, they have a high tolerance for "living" conditions.
An empty bottle with a few holes, thrown in some rotten fruit not eaten by humans, enables fruit flies to reproduce massively.
Furthermore, under a room temperature of 25 degrees Celsius, fruit flies can breed a new generation every ten days.
From egg to sexual maturity to reproduction, it only takes ten days.
Then, fruit flies have only four pairs of chromosomes, few in number and each distinctly shaped.
