Xét cá thể có kiểu gen Dd . Khi giảm phân hình thành giao tử thì có 36% số tế bào không xảy ra hoán vị gen. Theo lý thuyết, số giao tử mang 2 alen trội chiếm tỉ lệ

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  I'd like to live in a country ____________ there is plenty of snow in winter.
   

• Find a mistake in the four underlined parts of the sentence and correct it:

  It was not until she left him that he had realized his love for her.

• Choose the best answer for the following sentence:

  They agree ___________ him some money to buy a new bike.
  
  

• Choose the best answer for the following sentence:

  John ____________ to executive manager of an advertising company.
  
  

• Choose the best answer for the following sentence:

  Ann's mother __________ when she came home late.
  
  

• Choose the best answer for the following sentence:

  We ___________ to Da Lat several times. It's a foggy city.
  
  

• Find a mistake in the four underlined parts of the sentence and correct it:

  She was depressing because the main character died at the end of this moving love story film.

• Choose one sentence that has the same meaning as the root one:

  I am really sorry that I forgot your birthday.

• Choose one sentence that has the same meaning as the root one:

  My brother and I went to that school.
  
  

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

  around                   famous                   today                    make