In my science class we did this project that had to deal with genes with these paper pet families. Mainly for us to make these paper pet families we had to flip coin to figure out if the parents were going to be blue or yellow to make a punett square to find the percentage of their children being blue, yellow, round nose. triangular and so on. We had to also find flip to coins for the offsprings of the parents to find out if they were to be a girl or a boy offspring.
It was very simple to make the family. It was also very fun to make the little family of paper. I wasn't very surprised that the family was all blue on my paper pet family because the parents were both blue. This is of course possible. But there might of been a chance of getting a yellow if both of the heterozygous dominant. This one possible way of having a yellow offspring.