Parents contribute unequal amounts of non-nuclear DNA to their offspring
the verdict
SUPPORTED
the evidence backs this
confidence 90/100
Parents contribute unequal amounts of non-nuclear DNA to their offspring because mitochondrial DNA is predominantly inherited maternally while paternal mitochondrial contributions are typically degraded or excluded.
Evidence for · 4
Maternal inheritance of mitochondrial DNA by diverse mechanisms to eliminate paternal mitochondrial DNA.
2013 · cited by 287
Paper 0 details how maternal inheritance dominates because paternal mitochondrial DNA is actively eliminated after fertilization.
See more details
More for · 3
Paternal comeback in mitochondrial DNA inheritance
2019 · cited by 32
Paper 2 discusses the general rule of strict maternal transmission of mtDNA alongside rare instances of paternal contributions.
Research progress on paternal mitochondrial inheritance: An overview.
2025 · cited by 3
Paper 5 notes that mitochondrial inheritance is predominantly maternal, though minor paternal transmission can occasionally occur.
Paternal Mitochondrial DNA Leakage in Natural Populations of Large-Scale Loach, Paramisgurnus dabryanus
2024 · cited by 3
Paper 6 documents occasional paternal mitochondrial DNA leakage resulting in heteroplasmy in certain natural populations.