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Biology  /  Bio 1059  ·  Atom · ~20 seconds

The Dihybrid Cross

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A dihybrid cross tracks two characteristics at once between parents differing at both, revealing whether the two traits assort independently.

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Crossing a plant true-breeding for yellow, round seeds with one true-breeding for green, wrinkled seeds isolates both traits in one cross.

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A dihybrid cross requires both parental lines to be true-breeding at both loci — an already-mixed starting genotype breaks the design.