Cho các nhân tố:

(1). Biến động di truyền

(2). Đột biến

(3). Giao phối không ngẫu nhiên         

(4). Giao phối ngẫu nhiên

Các nhân tố có thể làm nghèo vốn gen của quần thể là:  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Alexis _____________________ next week.
   

   

• Choose the best answer for the following sentence:

  The news of war _______________ and the world.

   

• Choose the best answer for the following sentence:

  The player _____________________.

   

• Choose the best answer for the following sentence:

  Before the end of the term, I ________________ all the required reading.

   

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

  sprint                 line                    divide                  ride

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

  swimming                    post                   decision                 score

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

  style                   penalty                   prettỵ                  typical

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

  pool                   good                   look                    book

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

   foul                     house                   amount                    adventurous

• Choose the best answer for the following sentence:

  Where can people play _____________ water polo?