Cho biết mỗi gen quy định một tính trạng, quan hệ trội lặn hoàn toàn. Xét các phép lai: (1) AaBbdd × AaBBdd. (2) AAbbDd × AaBBDd. (3) Aabbdd × aaBbDD.          (4) aaBbdd × AaBbdd. (5) aabbdd × AaBbDd. (6) AaBbDd × AabbDD. Có bao nhiêu phép lai cho tỉ lệ kiểu hình 3 : 3 : 1 : 1?

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  population                probably                    clock                  remote

• Choose a word that has different stress pattern:

  figure                  limit                method               control

• Choose a word that has different stress pattern:

  probably               animal               stimulate             effective

• Choose a word that has different stress pattern:

  disappointed                 population               distribution              minority

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

  comment              coward                 clock               celebration

• Choose a word that has different stress pattern:

  influence                 notify                  increase               celebrate

• Choose a word that has different stress pattern:

  enthusiastic             anniversary              universal                 population

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

  pesticide                 city                centre                  campaign

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

  represent                 receive               respect              repeat

• Choose a word that has different stress pattern:

  extinct             decrease               affect                influence