khanhthuy1981

1 năm trước

viết giao tử của KG: AB/ab

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Hermione

1 năm trước

`(AB)/(ab)`

`*` Có xảy ra hoán vị gen ( với tần số `f` ) :

`-` TH là `1` tế bào tạo ra `4` loại giao tử với tỉ lệ như nhau: `AB; ab; Ab; aB`

`-` TH là `1` cơ thể tạo ra:

`+` Giao tử hoán vị : `Ab=aB= f/2`

`+` Giao tử bình thường: `AB=ab=(1-f)/2`

`*` Không xảy ra hoán vị gen:

Cho ra `2` loại giao tử : `1/2 AB : 1/2 ab`

pchi0802

1 năm trước

Đáp án + Giải thích các bước giải:

Kiểu gen `(AB)/(ab)` giảm phân cho `2` loại giao tử là `\underline{AB}; \underline{ab}`

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viết giao tử của KG: AB/ab

2 câu trả lời

if you don't wear a helmet , you can't ride your bike => Unless

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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viết giao tử của KG: AB/ab

2 câu trả lời

if you don't wear a helmet , you can't ride your bike => Unless

Choose the best answer.I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.

Choose the best answer.We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.

Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

Đề thi - đề kiểm tra Xem thêm

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.