Final answer:
The DNA in the mitochondria helped scientists to reach the conclusion about the Swedish wolf population because the mitochondria contains its own DNA that is passed down exclusively from the mother to the offspring.
Step-by-step explanation:
The DNA in the mitochondria helped scientists to reach the conclusion about the Swedish wolf population because the mitochondria contains its own DNA that is passed down exclusively from the mother to the offspring. This means that the mitochondrial DNA (mtDNA) is inherited maternally and does not undergo recombination, making it a useful tool for studying maternal lineages and tracing ancestry.