Which of the following statements is TRUE about human mitochondrial DNA (mtDNA)? A) mtDNA replication is independent of the nuclear DNA replication cycle and is therefore a less pr... Which of the following statements is TRUE about human mitochondrial DNA (mtDNA)? A) mtDNA replication is independent of the nuclear DNA replication cycle and is therefore a less precise process. B) mtDNA is a circular molecule, about 16,569 base pairs long. C) The number of mtDNA copies within a cell is constant throughout a person's lifetime. D) mtDNA is inherited from both parents equally.
Understand the Problem
The question is asking about the characteristics of human mitochondrial DNA (mtDNA) and requires determining which of the provided statements is true based on biological knowledge.
Answer
mtDNA is a circular molecule, about 16,569 base pairs long.
The true statement about human mtDNA is that it is a circular molecule, about 16,569 base pairs long.
Answer for screen readers
The true statement about human mtDNA is that it is a circular molecule, about 16,569 base pairs long.
More Information
Human mitochondrial DNA (mtDNA) is inherently distinct from nuclear DNA. It is indeed a circular molecule, akin to bacterial DNA, and this is a defining feature.
Tips
One common mistake is assuming mtDNA is inherited from both parents. In reality, it is maternally inherited.
Sources
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