Đáp án:
D
Giải thích các bước giải:
Quy ước gen
$B$ - Quả tròn
$b$ - quả bầu dục
Sơ đồ lai
$P: AA$ x $aa$
Quả tròn Quả bầu dục
$G : A$ $a$
$F1 : Aa$ (quả tròn)
Chọn D
Quy ước :
B - quả tròn
b - quả bầu dục
Sơ đồ lai :
P : Bb x Bb
Qủa tròn Qủa bầu dục
G : B,b B,b
F1 : 1BB , 2Bb , 1bb
KH : 3 quả tròn : 1 quả bầu dục
-> C
Giải giúp mình câu điền số thích hợp vào ô trống thôi nhé
Giúp mình bài này với mọi người
Mark the letter A, B, C, or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. 1. Despite being a kid, Tuan always helps his mother do the chores every day. A. homework B. works C. housework D. house duties 2. When I was a child, my mother used to teach me table manners. A. etiquette B. rule C. problem D. norm 3. Many parents find it hard to understand their children when they are teenagers. A. adults B. elders C. adolescents D. kids 4. There're many problems which are unavoidable when living in an extended family. A. profits B. issues C. views D. merits 5. Mary has a strong desire to make independent decisions. A. dependent B. self-confident C. self-confessed D. self-determining 6. My mother mistakenly believes that my fashion style breaks the norm of society. A. routine B. barrier C. rule D. conflict 7. I always look at this matter from a different viewpoint. A. point of view B. view from point C. idea D. opinion 8. We find it unattractive when dress flashily. A. luxuriantly B. ostentatiously C. cheaply D. fashionably 9. Consuming too much junk food increases the risk of obesity. A. decrease B. reduce C. rise D. raise 10. I feel extremely depressed as conflict occurs frequently amongst generations in my family. A. comes on B. comes up C. comes in D. comes into
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3 khối 6,7,8 tham gia trồng cây. Biết số cây trồng của 3 khối tỷ lệ là 3,7,5 và khối 7 trồng nhiều hơn khối 8 là 30 cây . tính số cây mỗi khối lớp trồng được
Giúp em với ạ e cần gấp lắm ạ huhu
III. Complete two sentences for each situation. Use an adjective ending in -ing or -ed to complete each sentence. It’s been raining all day. I hate this weather (depress-) a, This weather is ............................. b, This weather makes me ............................. 2. Astronomy is one of Tom’s main interests (interest-) a, Tom is ............................. in astronomy. b, He finds astronomy very ............................. 3. I turned off the television in the middle of the programme (bor-) a, The programme was ............................. b, I was ............................. 4. Ann is going to America next month. She has never been there before (excite-) a, She is really ............................. about going. b, It will be an ............................. experience for her. 5. Diana teaches young children. It’s a hard job (exhaust-) a, She often finds her job ............................. b, At the end of the day’s work she is often .............................
Giúp giùm em câu 8 ,9 với ạ mai em nộp rùi ạ
Help me mọi người giúp mình với ạ
Viết một đoạn văn (5 đến 10 dòng) cảm nhận về bài ca dao: Công cha như núi ngất trời, Nghĩa mẹ như nước ở ngoài biển Đông, Núi cao biển rộng mênh mông, Cù lao chín chữ ghi lòng con ơi!
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