Cut out the circles separating them by trait and sex, i.e., female sickle cell, male sickle cell, female height, male height, etc. Put each trait's circles in a bag marked with the name and sex of that trait. Be sure to mix the circle cut outs so that there is an excellent chance for random selection. Using Mendelian method students are to place genotypes in Punnett square to compute genotype ratios. Each pair of students will get the traits for their child buy selecting two genotype circles from each bag.
Female students draw two genotypes from each female bag of traits.
Each male student does the same from the male bags. Once the computations are made students are to select traits based on highest ratios for a specific trait. If the trait's ratios are the same they are to flip a coin to determine if the child will have that trait. Couples should flip coin to decide which trait is selected. Once genotype for each trait has been determined, student pairs can construct genotype profile.