cho lai hai thứ hoa thuần chủng màu vàng và màu xanh, được F1 100% hoa vàng. cho các cây F1 tự thụ phấn với nhau thu được F2 có tỉ lệ 36 hoa vàng: 12 hoa xanh. Biện luận và viết sơ đồ lai .

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1, It was a nice sunny day, but there were very few people at the beach Although ........................................................................................................... 2, She is not prepared for the test, but she has to do it Despite................................................................................ 3, Even though he had no qualifications for it , he got the job In spite of ....................................................................................... 4, I told her all the truth. However , she didn't believe me. Although....................................................................................... 5. It might be cold, but we'll still go for a walk Even if............................................................... 6, They didn't have much time , however they came to visit us In spite of .................................................................................... 7, I like the car you have recommended very much, but I can't buy it. However ................................................................................................... 8, He arrived latter, but he finished work earlier than the others Even though ........................................................................................... 9, They might give me a big salary, but I'm not going to accept their offer. Even if .................................................................................................... 10, It doesn't matter what you say, I can't believe you Whatever..........................................................................