Children of older dads may have less brain power
October 4, 2011 (WLS) -- Older dads could pass on gene mutations that lower their children's intelligence.
A new study finds certain genetic abnormalities in a man's chromosomes appear to be linked to intellectual disabilities in his off-spring, especially if he fathered them late in life.
These abnormalities are caused by what are called copy number variants such as missing or repeated DNA sequences.
It is commonly known that the risk of birth defects, such as Down syndrome, increases with maternal age, but this study shows an increased paternal age is also an important factor.
- Boy, 12, killed in hit-and-run in Whiting
- Meeting addresses consequences of 'sexting'
- Police: Suspicious item on LSD was sleeping bag
- ABC7 First Alert Weather Forecast
- Grand jury indicts Lake Station mayor, wife
- Police release sketch in Albany Park attempted kidnapping
- Chicago boy remembered 1 year after suspicious death
- Lyons residents respond to police cuts
- Kirk introduces stroke research, treatment legislation
- Bond denied for suspect in Boystown sex assault
- Tavern shutdown racially motivated, owner says
- School bus collides with car, then sign in Bartlett
- Hero officers save two boys from West Pullman fire
- abcnews: Experts: Pistorius May Have Stumbled on Stand
Most Viewed StoriesMost Viewed Photos