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Gaokao Biology Practice Question

6.某种自花传粉植物的等位基因A/a和B/b位于非同源染色体上。A/a控制花粉育性,含A 的花粉可育;含a的花粉50%可育、50%不育。B/b控制花色,红花对白花为显性。若基因 型为AaBb的亲本进行自交,则下列叙述错误的是()

  1. A.子一代中红花植株数是白花植株数的3倍
  2. B.子一代中基因型为aabb的个体所占比例是1/12
  3. C.亲本产生的可育雄配子数是不育雄配子数的3倍
  4. D.亲本产生的含B的可育雄配子数与含b的可育雄配子数相等

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