基因工程是指按照人的意愿，运用人工方法，对生物的_1进行“移花接木”式改造的重组技术．

题干

基因工程是指按照人的意愿，运用人工方法，对生物的____进行“移花接木”式改造的重组技术．

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基因组成

Lucy	I like sports. I have ten tennis balls, seven basketballs, four volleyballs and five soccer balls. I play tennis with my friends every day.
Mary	I have five baseballs, five volleyballs, two soccer balls. I like ping-pong. It's easy for me. I often play ping-pong with my classmates. I also have three ping-pong bats and lots of ping-pong balls.
Alice	I don't have any balls. I love sports, but I don't play them. I only watch them on TV.