Một quần thể người ở trạng thái cân bằng di truyền có 4% người mang nhóm máu O, 21% người có nhóm máu B còn lại là nhóm máu A và AB. Số người có nhóm máu AB trong quần thể là

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  _______________________ I would not have overcome my mispronunciation.

   

   

• Choose a word that has different stress pattern:

  inadequate            embarrassment                dispirited             entertainment

• Choose a word that has different stress pattern:

  ashamed                 image                  party                 notice

• Choose the best answer for the following sentence:

  I supposed there was something wrong __________________________ our plan.

   

   

• Choose the best answer for the following sentence:

  His parents were extremely ashamed _________________________ his behaviour last night.

   

• Choose the best answer for the following sentence:

  I caught sight of Dick in a restaurant on ___________________________ way home

   

• Choose the best answer for the following sentence:

  The hostess brought me some coffee, but ________________________  coffee was so bitter that I could not drink it.

   

• Choose the best answer for the following sentence:

  He believes that parents should be made ______________________________ responsible for their children’s behaviour.

   

• Choose the best answer for the following sentence:

  The only sign of ________________________ is that he keeps glancing at his expensive watch.

   

• Choose the best answer for the following sentence:

  I always suffer from feelings of _________________ when I am talking about art with him.