Vùng mã hóa của gen ở sinh vật nhân thực có 51đoạn exon và intron xen kẽ, số đoạn exon và intron lần lượt là    

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Một số câu hỏi khác có thể bạn quan tâm.

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

  We were best friends in high school, but we lost touch while we were studying at university.
   

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

  ''Why didn’t you join your friends on the trip?'', she asked.
  
  

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

  peace                 ear                 hear               near

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

  cat               cup                coat            cell

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

  brother              thank                these                they

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

  player                prefer               grocer               porter

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

  height                bright                   mind                weight

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

  serial               servant                     service                 servile

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

  pond                off               follow             money

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

  eight              weight               height                  freight