Write two application of DNA fingerprinting

In DNA fingerprinting, scientists collect samples of DNA from different sources — for example, from a hair left behind at the crime scene and from the blood of victims and suspects. ... The profile of repetitive regions in a particular sample represents its DNA fingerprint, which ends up looking a bit like a barcode.

In studying micrographs of an unusual protist that you found in a sample of pond water, you spot an organelle that you can't recognize. You successfully develop a method for growing this organism in a liquid in the laboratory. Describe ow you would go about finding out what this organelle is and what it does in the cells. Assume that you would make use of additional microscopy, cell fractionation, and biochemical tests.