When the file opens, you will see a pedigree window set to show color. There are three dragons in it - two males and one female. Jake and Joe are bronze and Jennie is gold. Circle all of the possible combinations of alleles for each of the dragons. The student, by referring to the Dragon Genome reference sheet, circles all possible combinations for the color genes of the three dragons.
Color is particularly difficult for students to understand.
Not only is it polygenic, but it is also x-linked and one of the genes has a recessive lethal allele. This first exercise helps him to sort through the various combinations. Only by running a pedigree and observing what the F2 generation looks like. Now use the cross tool to mate Jake and Jennie. You will get exactly 16 children.