In pea plants, (tall) is dominant to (dwarf) and (purple) is dominant to (white). Two plants of genotype are crossed. What is the probability of a dwarf, white offspring?
Answer and explanation
Correct answer: D.
- Step 1: Dwarf white is . Probability of is and of is .
- Step 2: The genes assort independently: .
Answer
.
Why not the others: : treats it as a single-gene cross. : is the probability of tall-white or dwarf-purple offspring each. : is the probability of a tall, purple offspring.
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