Which of the Following is Not True of Human MtDNA

Question

Which of the following is not true of human mtDNA?
A) it encodes all of its own proteins
B) it can all be traced back to females that lived in Africa 20,000 years ago
C) it encodes components of the electron transport chain
D) it encodes all of the rRNA for its own ribosomes
E) it has a higher mutation frequency than nuclear DNA

Accepted Answer

Human mtDNA does not encode all of its own proteins; many proteins required by mitochondria are encoded by nuclear DNA and imported into the mitochondria.