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Family tree revealing paternal inheritance of mitochondrial DNA (mtDNA). Luo et al.2 sequenced the mtDNA of several members of a family in which many individuals had a high level of mtDNA heteroplasmy (the presence of distinct genetic variants in the same cell). This mtDNA variability is denoted by two colours in the same silhouette of an individual. The analysis showed that some of the individuals with heteroplasmy had inherited mtDNA from both of their parents, breaking the usual pattern of exclusive maternal inheritance of mtDNA. Luo et al. suggest that the ability to inherit paternal mtDNA is a genetic trait.

Mitochondrial DNA can be inherited from fathers, not just mothers

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the...
Researcher at Institute of Genomics, University of Tartu

Haryana’s Rors brought Western flavor to Indus Valley

People belonging to the Ror community living in parts of present-day Haryana and Rajasthan have emerged as a key player in the jigsaw puzzle...
Mitochondria are tiny, free-floating organelles inside cells. Image: Northwestern University

Not your mom’s genes: Mitochondrial DNA can come from dad

We have learned in our biology classes that mitochondrial DNA comes only from the mother. But now, this theory need to be rewrite. A new study...

Study demonstrates impact of temperature on mitochondrial DNA evolution

Mitochondrial DNA (mtDNA) is usually passed down from one generation to the next only through the mother. Researchers have long assumed that variations in...

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