Question: Consider this cross in pea plants: Tt Rr yy Aa X Tt rr Yy Aa, where T = tall, t = dwarf, R = round,

Consider this cross in pea plants: Tt Rr yy Aa X Tt rr Yy Aa, where T = tall, t = dwarf, R = round, r = wrinkled, Y = yellow, y = green, A = axial, a = terminal. What is the expected phenotypic outcome of this cross? Have one group of students solve this problem by making one big Punnett square, and have another group solve it by making four single-gene Punnett squares and using the product rule. Time each other to see who gets done first.

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