user-avatar
phat682003
2 năm trước
Bài 1:Xác định tính trạng trội và tính trạng lặn trong các phép lai sau Phép lai 1:Ptc: hạt trơn x hạt nhãn --->100%hạt trơn Phép lai 2:Ptc:hạt vàng x hạt xanh tạo ra F1:100% hạt vàng Phép lai 3: Ptc :ruồi giấm thân sáng ( chữ x là dấu nhân,giúp mik với)
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Ex1: Choose the word or phrase among A,B,C or D that best fits the blank space in the following passage: It's important to (1)............. well, especially when you are studying. If you are at primary (2)......., you may not go home for lunch and have a cooked meal of meat or (3)......... and vegetables. A chicken and lettuce sandwich, with some (4)........ fruit would be a light but (5)........ lunch. Many people around the world eat plain, boiled (6)...... two or thrre times a day. Pupils and stufents often don't eat (7)....... when they're revising for an exam-they eat chocolate and (8)...... lots of black coffee! And by the way, doctors say everybody should start the day with healthy (9).......... It's also good for you to drink a lot of (10)...... through the day. 1. A. launching B. emitting C. eat D. peaking 2. A. school B. weapons C. spaceships D. rockets 3. A. to B. towards C. with D. fish 4. A. as soon as B. fresh C. as well as D. such as 5. A. burnt B. explored C. went off D. healthy 6. A. rice B. audience C. observatories D. watcher 7. A. sent back B. returned to C. well D. except for 8. A. weightlessness B. drink C. wavelengths D. length 9. A. space B. atmosphere C. vacant D. breakfast 10. A. scientists B. drivers C. water D. astronauts CÁC BN GIÚP MIK VỚI CTLHN LUÔN, VOTE 5 SAO LUÔN

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team