Question

the discovery of mitochondrial dna (mtdna) had no effect on which area of scientific investigation?
endosymbiotic theory
inheritance research
forensic science
study of cork bark

Explanation:

Mitochondrial DNA supports the endosymbiotic theory as it has its own DNA like bacteria. It's used in inheritance research due to maternal - only inheritance. In forensic science, it helps in identifying remains. Cork bark study is about plant structure and has no relation to mtDNA.

Answer:

study of cork bark