Một cơ thể có kiểu gen Ab/aB khi sinh giao tử đã xảy ra hoán vị gen với tần số 25%. Giả sử đây là cơ thể đực, số tế bào sinh tinh là 500 thì số tế bào sinh tinh có xảy ra hoán vị gen là bao nhiêu?

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  _____________ at the audience, the contestant gave her answer with confidence.
  
  

• Choose the best answer for the following sentence:

  She decided _______________ to another city.
  
  

• Choose the best answer for the following sentence:

  ____________ all the rules of chess, the contestants started to play the first game.
  
  

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

  When I bought the dress, I didn’t notice nothing wrong with it.

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

  The fields were full of cows and sheeps.

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

  In recent years a large number of our equipment has been stolen from construction sites. 

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

  dishes                   watches                     boxes                     potatoes

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

  pain                 afraid                    certainly                     fail

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

  casual                  usually                   occasion                    comprehension

• Choose the word whose stress is on the second syllable:

  thematic                mountainous                 library                   legacy