* Một gen có 450 nuclêôtit loại G và nuclêôtit loại T = 35%. Số liên kết hiđrô được hình thành sau 5 lần gen tự nhân đôi là

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  __________ playing professional basketball, she also enjoys tennis.
   

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

  "I saw her in the park two hours ago," said he.
   

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

  "Joe has a lot on his mind, " Mrs Baker said.
  
  

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

  I'll break a promise if I tell you her name.
  
  

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

  "I'm leaving here for Da Lat next week," said Mrs Lan.
  
  

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

  Though her difficult living condition, Marie worked extremely hard to earn a degree.

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

  A United Nations tried to solve some global environmental problems.

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

  I really think that apologizing is a little you can do now.

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

  seafood                   release                    threaten                 beneath  

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

  however                   know                      follow                    show