题目

基因型为AaBb和Aabb的豌豆杂交(两对基因位于两对同源染色体上),后代中基 因型种类是    A.6         B.8         C.8         D.4 答案:ASarah______an interesting movie with her friend Lily this time yesterday.A.watched B.has watched C.will watch D.was watching
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