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:

• Endosymbiotic theory: Mitochondrial DNA supports the idea that mitochondria were once free - living prokaryotes (endosymbiotic theory).
• Inheritance research: Mitochondrial DNA is maternally inherited, which is important in inheritance studies.
• Forensic science: Mitochondrial DNA can be used in forensic analysis (e.g., in cases with limited nuclear DNA).
• Study of cork bark: Cork bark is made of dead cells (cork cells) and has no relation to mitochondrial DNA. Mitochondrial DNA is relevant in living cells with mitochondria (e.g., most eukaryotic cells), and cork bark does not involve mitochondrial function or characteristics.

Answer:

study of cork bark