Ở một loài thực vật, gen A qui định quả đỏ trội hoàn toàn so với gen a qui định quả vàng. Cho cây 4n có kiểu gen aaaa giao phấn với cây 4n có kiểu gen AAaa, kết quả phân tính đời lai là:  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the correct sentence which is built from the words and phrases given:

  Sea turtles / turtles / find / all the world's oceans / except / Arctic Ocean //.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  Sea turtles / play / important roles / the ecosystems / the oceans / beaches//.
  
  

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

  subtract                    doubt                    debt                     climb

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

  product                 programme                     psychiatrist                    prefer

• Choose a word that has different stress pattern:

  forester                forename                    forget                     formal

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

  With the development of technology, there’s a number of ways by which message

  can send.

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

  He takes risky of his life to survive the tiger from the trap.

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

  Some people think that drinking bear gall should abandon to maintain these rare animals.

• Choose the correct sentence which is built from the words and phrases given:

  My friends / I / take / trip / my hometown /Lao Cai //.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  We / go / camp / hill / nearby //.