父本基因型为AABb，母本基因型为AaBb，其F1不可能出现的基因型是 ( )
①蚯蚓走迷宫 ②蜘蛛结网 ③小猴做算术 ④蜻蜓点水
After a heated discussion at the meeting，a new plan came________being，which would have a great effect________the culture life of people.
