The Dihybrid Cross
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A dihybrid cross tracks two characteristics at once between parents differing at both, revealing whether the two traits assort independently.
Show
Crossing a plant true-breeding for yellow, round seeds with one true-breeding for green, wrinkled seeds isolates both traits in one cross.
Watch for
A dihybrid cross requires both parental lines to be true-breeding at both loci — an already-mixed starting genotype breaks the design.