The heading, Intelligence genes discovered by scientists with this as the sub-head: “Imperial College London has found that two networks of genes determine whether people are intelligent or not so bright.” From the text:

Genes which make people intelligent have been discovered and scientists believe they could be manipulated to boost brain power.

Researchers have believed for some time that intellect is inherited with studies suggesting that up to 75 per cent of IQ is genetic, and the rest down to environmental factors such as schooling and friendship groups.

But until now, nobody has been able to pin-point exactly which genes are responsible for better memory, attention, processing speed or reasoning skills.
“Our research suggests that it might be possible to work with these genes to modify intelligence”

Now Imperial College London has found that two networks of genes determine whether people are intelligent or not-so-bright.

They liken the gene network to a football team. When all the players are in the right positions, the brain appears to function optimally, leading to clarity of thought and what we think of as quickness or cleverness.

In my experience, highly intelligent does not correlate with common sense, but nevertheless makes a difference no matter what you are trying to do.