Question

how is mitochondrial dna (mtdna) typing used in forensic science?
a suspects mtdna sample is matched to an unknown sample of nuclear dna that was found at a crime scene.
a suspects mtdna sample is matched to an unknown sample of mtdna that was found at a crime scene.
a suspects nuclear dna sample is matched to an unknown sample of nuclear dna that was found at a crime
scene.
a suspects nuclear dna sample is matched to an unknown sample of mtdna that was found at a crime scene.

Explanation:

Mitochondrial DNA (mtDNA) typing in forensic science involves matching mtDNA samples. Nuclear DNA and mtDNA are different types. When using mtDNA typing, it's about matching mtDNA to mtDNA.

Answer:

B. A suspect’s mtDNA sample is matched to an unknown sample of mtDNA that was found at a crime scene.