Ever wondered why we respect our elders? Well, it's not just good manners, but it could be in our genes, says a new study. Researchers in France have carried out the study and discovered the practice may have its roots deep in evolution -- in fact, respect for elders is a trait which is in genes rather than learned, the Daily Mail reported.

Scientists have discovered a gene that helps a mother and daughter stay alert on about six hours sleep a night, two hours less than the rest of their family needs.

Scientists say they've found a big reason why treatment for chronic hepatitis C infection works better for white patients than for African-Americans. It's a tiny variation in a gene.

Researchers have identified new sources of stem and leaf rust resistance in wild grass relatives of wheat, sourced mostly from the 'fertile crescent' of the Middle East.