Genes located on mitochondrial DNA are usually inherited
A) randomly.
B) from the mother.
C) from the father.
D) evenly from both the mother and the father.
E) by independent assortment.

Question

Quizplus · Accepted Answer

Mitochondrial DNA is only passed down from the mother to her offspring. This is because during fertilization, the egg contributes the majority of the cytoplasm, which includes the mitochondria and their DNA. Therefore, all mitochondrial genes are inherited exclusively from the maternal lineage.

Genes Located on Mitochondrial DNA Are Usually Inherited