Chithienlk11113

4 tháng trước

Ở cây ngô có bộ NST lưỡng bội là: 2n = 20. Số lượng NST trong bộ NST của thể ba nhiễm là bao nhiêu? A.21 B.22 C.23 D.24

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Hikivision2006

4 tháng trước

- Ta có : `2n=20`

- Thể ba nhiễm : `2n+1=20+1=21` NST

`⇒` Chọn `A`

chibana

4 tháng trước

Đáp án:

$A$

Giải thích các bước giải:

$\text{thể 3 nhiễm :2n+1=20+1=21}$

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Ở cây ngô có bộ NST lưỡng bội là: 2n = 20. Số lượng NST trong bộ NST của thể ba nhiễm là bao nhiêu? A.21 B.22 C.23 D.24

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Tìm lỗi sai, giải thích và sửa: The exercise corrects by the teacher every day.

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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Ở cây ngô có bộ NST lưỡng bội là: 2n = 20. Số lượng NST trong bộ NST của thể ba nhiễm là bao nhiêu? A.21​ ​​​B.22​​​ C.23​​​​ D.24

2 câu trả lời

Nước ta có bao nhiêu dân tộc?

Tìm lỗi sai, giải thích và sửa: The exercise corrects by the teacher every day.

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

Ở cây ngô có bộ NST lưỡng bội là: 2n = 20. Số lượng NST trong bộ NST của thể ba nhiễm là bao nhiêu? A.21 B.22 C.23 D.24

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.