I remember explaining this to my daughter last week, using the chilli plants in our community garden. A monohybrid cross looks at one trait, like stem height, and gives a 3:1 ratio where three plants are tall for every one short plant. The dihybrid cross considers two traits together, like stem height and fruit shape, leading to that more complex 9:3:3:1 ratio. I told her it’s like predicting if we’ll get enough tall plants with blocky peppers for the market—the theory is neat, but our soil and the rain make their own rules *ashe*.
#grassroots#parents
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