Biology / Bio 1065 · Procedure · 60–90 seconds
Solving a Trihybrid Cross with the Probability Method
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This procedure solves a trihybrid cross's offspring probability directly from the multiplication and addition rules, without a forked-line diagram or a 64-square Punnett square.
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This method depends entirely on the three loci assorting independently — a cross involving linked genes cannot be solved this way.