Roosters run afoul of genetic rules
Moms aren’t the only ones that pass mitochondrial DNA to offspring
![Chickens](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/12/122615_notebook-bizarre.jpg?fit=860%2C460&ssl=1)
LOOK, NO HENS Roosters sometimes hand mitochondria down to their chicks, DNA analysis of White Plymouth Rock chickens reveals. Usually mitochondria, energy-producing organelles in cells, are inherited from the mother.
Virginia Tech