Which of the following is NOT true of mitochondrial DNA?
A) it contains much 'unused' genetic material
B) it varies little from generation to generation
C) it is inherited clonally from generation to generation
D) it gets all its variation from a crossing-over phase during meiosis

Question

Quizplus · Accepted Answer

Mitochondrial DNA does not undergo a crossing-over phase during meiosis, as it is only passed down maternally and does not participate in the formation of gametes. Instead, its variation arises from mutations that occur during replication. Option A is also incorrect, as the 'unused' genetic material in mitochondrial DNA has been shown to serve important regulatory functions.

Which of the Following Is NOT True of Mitochondrial DNA