Bluetooth File Transfer is not just for copying files between two devices, you can also use it to edit, create, delete, move and rename files, either on your device, or another Bluetooth-enabled device, such as a PC, smartphone, PDA, or a music player.
Meaning and definition of bottleneck effect : Genetic drift resulting from the reduction of a population, typically by a natural disaster, such that the surviving population is no longer genetically representative of the original population.
The essential difference between bottleneck and founder effects is that a bottleneck is a subpopulation caused when a natural disaster reduces the size of an original larger population, while a founder establishes a subpopulation as a new colony drawn from a larger population.