Trong một quần thể người đang ở trạng thái cân bằng di truyền người ta nhận thấy 1% nam giới bị bệnh bạch tạng. Cho biết bệnh do gen lặn trên NST thường qui định. Tính theo lí thuyết trong số 10.000 nữ của quần thể này thì số lượng nữ bình thường mang gen bệnh là:

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  The ______________ wanted to reduce the breadth of the games, with many events currently having small fields and weak competition.
   

• Choose the best answer for the following sentence:

  In 2006, Viet Nam made a deep impression _______________ other countries in the region by successfully hosting the Southeast Asian Student Sport Festival.

   

• Choose the best answer for the following sentence:

  The Southeast Asian Student Sport Festival is the biggest sport event ____________ the youths in the region.
   

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

  glance                   hand                 navy                     master

• Choose a word that has different stress pattern:

  embarrass                  memory                     imagine                        exciting

• Choose a word that has different stress pattern:

  schoolbag                   decide                   replace                  escape

• Choose the best answer for the following sentence:

  In Hamlet, the opening scene ____________ place at night.

   

• Choose the best answer for the following sentence:

  John ______________ his first piece of music when he was ten years old.

   

• Choose the best answer for the following sentence:

  While Mai ____________ the meal, her brother _____________the house. 

   

• Choose the best answer for the following sentence:

  When I ______________ home, my parents _______________ to work.