The Bears on Saturday bolstered their secondary by trading up five spots in the fourth round of the draft to select Alabama safety with the No. 112 overall pick.
The 6-0, 201-pounder appeared in 41 games with 37 starts over four seasons for the Crimson Tide, registering 130 tackles, nine interceptions, 13 pass breakups, three forced fumbles and three fumble recoveries. He also returned two of 11 punts for touchdowns last year as a senior.
Jackson had two serious injuries at Alabama. He tore his ACL in April 2014 but returned for the second game of the season and appeared in 11 contests.