Fruit flies (Drosophila melanogaster) are called as Cinderella of genetics.
The reason for this name is because of their short lifespan of only 12 days, easy to culture and multiple progenies are generated in a single reproduction.
They bear a strong resemblance to humans so they are highly used in genetics, behavior, and evolution.
The genome has four chromosomes present in haploid conditions useful in studying genetics.