Final answer:
DNA profiling is a technique used to identify individuals and compare DNA samples. It can be used to show how some organisms are different species by comparing their DNA sequences.
Step-by-step explanation:
DNA profiling, also known as DNA fingerprinting, is a technique used to identify individuals or compare DNA samples. It involves analyzing specific regions of an individual's DNA called short tandem repeats (STRs). These regions vary among individuals, making each person's DNA unique.
DNA profiling can be used to show how some organisms are different species by comparing their DNA sequences. When comparing the DNA sequences of two organisms, scientists can look for variations or differences in the sequences. If the variations are significant, it suggests that the organisms are different species.
For example, if two organisms have significant differences in their DNA sequences, it indicates that their genetic makeup is distinct enough to classify them as different species. On the other hand, if two organisms have very similar DNA sequences, it suggests that they are closely related and may be the same species or closely related subspecies.