http://www.safarisamblog.com/wp-content/uploads/2012/02/Inherited-Traits-v.-Learned-Behavior-Activity.pdf
http://digitalcommons.trinity.edu/cgi/viewcontent.cgi?article=1064&context=educ_understandings
http://www.education.com/science-fair/article/biology_it-takes/
http://www.exploringnature.org/db/detail.php?dbID=22&detID=2290
http://studyjams.scholastic.com/studyjams/jams/science/human-body/heredity.htm
http://rescu.rice.edu/scope/78/evaluate/interactive_review_game
http://digitalcommons.trinity.edu/cgi/viewcontent.cgi?article=1064&context=educ_understandings
http://www.education.com/science-fair/article/biology_it-takes/
http://www.exploringnature.org/db/detail.php?dbID=22&detID=2290
http://studyjams.scholastic.com/studyjams/jams/science/human-body/heredity.htm
http://rescu.rice.edu/scope/78/evaluate/interactive_review_game