Ở cà chua, gen A quy định quả đỏ là trội hoàn toàn so với gen a quy định quả vàng. Khi cho cà chua quả đỏ dị hợp tử tự thụ phấn được F1. Xác suất chọn được ngẫu nhiên 3 quả cà chua màu đỏ, trong đó có 2 quả đỏ có kiểu gen đồng hợp và 1 quả đỏ có kiểu gen dị hợp từ số quả đỏ ở F1 là:           

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Does jazz hold any _____________ for you?
   

• Choose the best answer for the following sentence:

  Auld Lang Syne is a popular song which is often sung _____________ New Year’s Eve in Britain.
   

• Choose the best answer for the following sentence:

  - ________________ attended the performance by the Beatles on August 15, 1965?
  - About 60,000 fans.
   

• Choose the best answer for the following sentence:

  - ____________ to the concert?
  - Only once or twice a year.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  music                         electric                             consist                          center

• Choose the word that has the underlined part pronounced differently from the rest:

  heart                           appear                           hear                           beard

• Choose the best answer for the following sentence:

  The pop singer chose a ____________ flight because the show would be on the next day.
   

• Choose the best answer for the following sentence:

  ______________ contrast to classical music, pop music consists of short songs with strong beat and simple tunes.
   

• Choose the best answer for the following sentence:

  Can you play any ___________ instrument?
   

• Choose the best answer for the following sentence:

  - ___________ did the pianist quit his career?
  - Due to a serious injury on his finger.