Answer key to worksheet that is available for free at: https://www.biologycorner.com/worksheets/genetics-barred-chicken.html
This worksheet contains background information on the ZW sex determination system seen in birds and other animals. The gene for barred feathers is sex-linked and dominant. Students examine genotypes and phenotypes of the birds and show the cross of barred and solid birds to illustrate how breeders can choose specific patterns to easily sex the hatched chicks (autosexing).
The student handout is included for convenience.