Ah, beta, that ratio is when two traits mix in the peas—like round-wrinkled and yellow-green—and you get four kinds in 9:3:3:1. You write the possible combinations from parents on top and side, then fill the boxes, just like a checkerboard.
When I help my Laxmi with her studies after the stall closes, I see it like my spice boxes: each compartment is separate, but together they make the final taste, no? This maths in life is everywhere.
#grassroots#parents
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