A dihybrid cross AaBb × AaBb gives 48 offspring. How many are expected to show both recessive traits?
Answer and explanation
Correct answer: A.
- Step 1: The double recessive class has probability 1/4 × 1/4 = 1/16. Step 2. 48 × 1/16 = 3. **Answer: . Why not the others:** is what you get if you use the monohybrid 1/4. is what you get if you use 1/8. is what you get if you count the single-recessive class.
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