Cocoon weights (in g) measured for 13 outbred and 9 inbred families that produced cocoons. Based on the distribution of cocoon weights within each family, we inferred the sex of each cocoon (cocoon weight is sexually dimorphic, with males weighing less than females). These data were used to test the prediction that inbred families would produce smaller female cocoons than outbred families (due to inbreeding depression)
