叶绿体转基因技术是将外源基因整合到叶绿体基因组中，该技术能有效改良植物的品质．请回答：

（1）转基因技术的核心步骤是____ ，完成该步骤所需要的酶有____ 

（2）将植物体细胞处理得到原生质体，再通过____ 或____ 法，将目的基因导入原生质体，使原生质体再生细胞壁之后，通过____ 技术培养可得到相应的转基因幼苗．

（3）来自原核生物中有重要价值的外源基因，无需改造和修饰就可在叶绿体中高效表达，就此分析，原因是____ 

（4）对大多数高等植物而言，与传统的细胞核转基因相比，叶绿体转基因更稳定，其遗传方式____（答“遵循”或“不遵循”）分离定律，不会随____ （“花粉”或“卵细胞”）传给后代，从而保持了____ （“父本”或“母本”的遗传特性．

阅读短文，判断正（正确）误（错误）

     Dick was not old, but he does not have much hair. His wife Emma has thick, beautiful black hair. They have a son. His name is Peter, and he is five years old. One day, Dick was reading a book in his study. Peter looked at his father for a long time and then said to his mother, “Why does Papa have so little hair, Mama?” Emma laughed and said, “ He has little hair because he thinks a lot. He's a very clever man.” Peter looked at his mother's thick black hair for a few seconds and then said, “Then I know why you have so much hair.”