Final answer:
Mitochondria contain their own mitochondrial DNA (mtDNA), which serves as indirect evidence that DNA is the genetic material in eukaryotes. This mtDNA is inherited from the mother and indicates genetic functions, such as those involved in the electron transport chain. The correct answer is D) mtDNA.
Step-by-step explanation:
Indirect Evidence of DNA as Genetic Material in Eukaryotes
Indirect evidence that DNA is the genetic material in eukaryotes is demonstrated by the presence of mitochondrial DNA (mtDNA) in mitochondria. Mitochondria, as well as chloroplasts, have their own distinct DNA, which is separate from the nuclear DNA found in eukaryotic cells. This suggests that these organelles may have evolved through a process called endosymbiosis, where one cell engulfs another, but instead of digesting it, they coexist, benefiting from each other. The presence of mtDNA is not only indicative of this evolutionary origin but also provides evidence for the critical role of DNA in genetic functions.
The complete mitochondrial DNA of eukaryotes encodes numerous genes, primarily those involved in the electron transport chain. Mitochondria contain their own DNA, further confirming that DNA is essential for genetic inheritance and function. It is also interesting to note that mitochondrial DNA is maternally inherited, which provides another layer through which genetic information is passed from one generation to the next.
Therefore, the correct answer is D) mtDNA, as mitochondria and chloroplasts contain mitochondrial DNA that facilitates genetic functions. This is indirect evidence supporting the role of DNA as the genetic material in eukaryotes.