The single-gene mutations directly responsible for early-onset Alzheimer's disease do not seem to be involved in late-onset Alzheimer's, and researchers have not found a specific gene that causes the late-onset form of the disease.
The NFLâs worst defense in 2015 are expected to be the Atlanta Falcons, Jacksonville Jaguars, Tennessee Titans, Chicago Bears and Tampa Bay Buccaneers (not necessarily in that order).
Drafting Eli Manning. Although the Chargers were tied with three other teams for the worst record of the 2003 NFL season, the leagueâs tie-breaking system gave San Diego the number one pick in the 2004 NFL Draft.