Here’s a lesson on the 47,XYY karyotype (XYY syndrome) using the jigsaw format. It starts with a factual learning check and some slides to support an explanation of three different explanations of the association between XYY and offending. The jigsaw element is oriented towards using research into 47,XYY as a way of discussing various issues and debates in psychology. These are based on some of those specified by Edexcel (reductionism, socially sensitive research, development of knowledge over time and nature/nurture) but I imagine they’re fairly broadly applicable. There’s a slideshow, a Socrative true/false quiz on XYY and a set of jigsaw materials on XYY for four groups.