The discovery of mitochondrial DNA (mtDNA) had no effect on the study of cork bark of scientific investigation. The correct option is D.
Mitochondrial DNA is a type of circular DNA that is present in the mitochondrial. Mitochondria is an organelle of cells that is the main organ for the store of energy in the form of ATP.
Mitochondrial DNA has some different functions like they are having many copies, a high mutation rate and maternal inheritance which means it only came from the mother side in the offspring.
This DNA has great importance in synthesizing some enzymes and proteins for the function and pathways of the energy synthesized in the mitochondria.
Thus, the correct option is D. study of cork bark.
To learn more about mitochondrial DNA, refer to the link:
https://brainly.com/question/508534
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