** Biết A: Hoa trắng         B: Hoa kép              D: Quả to            E: Thơm

            a: Hoa tím            b: Hoa đơn              d: Quả nhỏ          e: Không thơm.

Quá trình giảm phân xảy ra hoán vị gen giữa B, b với tần số 20%; giữa D, d với tần số 40%. Một cặp P: . Tỉ lệ xuất hiện loại kiểu gen  ở F₁ là

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Mark a letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions:

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• Mark a letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions:

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• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  The picture, _______, was beautiful.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  ____ summer I spent in _____ UK was one of ___ best in my life.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  I bought this grammar book ____ I could go over all the things we have studied this year.                 

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  If people paid a little more attention to the environment, the Earth ___ greener.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  The woman sitting next to me on the plane was very nervous. She _____ before.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  Kate asked Janet where _____ the previous Sunday.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  The child that we caught _____ was made to stand in the corner of the classroom.         

• Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions:

  Her mother is _____ nurse. She works at a large hospital.