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Genes located on mitochondrial DNA

1. generally show maternal inheritance
2. are always inherited from the male parent
3. show biparental inheritance like the nuclear genes
4. are not inherited

Correct answer: generally show maternal inheritance

Solution

Mitochondrial DNA is usually inherited from the mother because the embryo receives most of its cytoplasm, including mitochondria, from the egg. Sperm mitochondria are typically not transmitted to the offspring.

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