PROCEDURE PART 1: PUNNETT SQUARES 1. Set up and complete Punnett squares for these crosses: (remember Y = yellow, y = blue) Y Y and Y y Y Y and y y Materials Blue Beads Green Beads Red Beads Yellow Beads Pop-it® Beads (8 different colors) Experiment 2 Punnett Square Crosses Experiment Inventory Labware (2) 100 mL Beakers *Pen or Pencil In this experiment: Regular beads are used as nucleotides. Pop-it® beads are used as amino acids. Note: You must provide materials listed in *red 2. What are the resulting phenotypes? 3. Are there any blue kernels? How do you know? 4. Set up and work a Punnett square for a cross of two of the F1 genotypes produced in Step 1B (above). a. What are the genotypes of the F2 generation? b. What are their phenotypes? c. Are there more or fewer blue kernels in the F2 generation than in the F1 generation? 5. Identify the four possible gametes produced by the following individuals: a. YY Ss: ______ ______ ______ ______ b. Yy Ss: ______ ______ ______ ______ 6. Fill in the following Punnett square using these gametes as P, and determine the genotypes of the F1: 7. What are the phenotypes? 8. You have been provided with four different colored regular beads (note, this step does not require the Pop-it® beads). Pour 50 blue beads and 50 yellow beads into Beaker 1 and mix them together. 9. Pour 50 red beads and 50 green beads in Beaker 2 and mix them together. Assume that: • Both contain approximately the same number of each colored bead. • These colors correspond to the following traits: • Yellow beads confer the dominant, yellow color (Y) • Blue beads confer the recessive, blue color (y) • Green beads confer the dominant, smooth texture (S) • Red beads confer the recessive, wrinkly texture (s)