I believe that the idea comes from
epigenetic mouse studies. I did not read the original Roosh writing about it, but here you have the info, if interested:
Here's a summary of the relevant research:
- Transgenerational Epigenetic Inheritance in Mice: A study published in "Cell" showed that epigenetic changes, which alter how genes are expressed, can be transmitted across multiple generations of mice. In this research, scientists engineered an epigenetic mutation in mouse stem cells and tracked it across four generations of lab-bred mice. Even after the typical epigenetic 'wipe' that occurs in reproductive cells, these alterations were still observed in each subsequent generation. This study provides experimental evidence for transgenerational epigenetic inheritance using methylation-edited mice.
- Effects on Metabolism and Behavior: The same study involved silencing two genes associated with metabolism in mouse stem cells. The mice with these epigenetically modified cells became more obese and had higher cholesterol levels than control mice. When a male modified mouse was bred to a female mouse from an unrelated strain, the offspring that inherited the modified allele displayed the same inhibited methylation pattern and phenotypic changes, such as obesity and high cholesterol levels, across four generations, regardless of whether the parent was a male or female edited mouse.
- Behavioral Traits Shaped by Parental Genes: Another study found that specific complex behaviors in mice are shaped by genes inherited from one parent. This phenomenon, known as genomic imprinting, results in the unequal expression of alleles inherited from a mouse's mother or father in various cells, especially in the brain and adrenal system. The study observed that maternal alleles shape the foraging behavior of male offspring, while paternal alleles influence the behavior of female offspring.
- Epigenetic Inheritance Through Sperm RNAs: Emerging evidence suggests that acquired traits, including those influenced by the environment, can be inherited by offspring through paternal lines. This inheritance occurs through epigenetic information encoded in sperm, including sperm RNAs like microRNAs (miRNAs) and tRNA-derived small RNAs (tsRNAs). These components can mediate the intergenerational transmission of paternally acquired phenotypes, such as diet-induced metabolic disorders and mental stress phenotypes.
In summary, these studies indicate
that mice can pass on certain traits and behaviors to their offspring through epigenetic mechanisms. This includes not only physical traits but also complex behaviors and phenotypic changes influenced by the environment. The transmission of these traits can occur over multiple generations, and both paternal and maternal genes play distinct roles in shaping the characteristics of the offspring.
Again this is a mouse model.