题目

Who needs guard dogs when you have wolves, right? That's probably what Kazakh villagers in the Almaty region thought when they decided to replace their dogs with the fierce forest-living beasts. According to local news reports, taming wolves is now the latest trend and a sort of hobby among rural Kazakhs. “You can buya wolf cub for just $500, they say, and hunters are determined that if treatedwell, the wild animal can be tamed,” the KTK television channel reported.Nurseit Zhylkyshybay, a farmer from the south-eastern Almaty region, toldreporters that he purchased a wolf cub from hunters （9分）在20世纪初，科学家用植物体细胞杂交的方法，将番茄的原生质体和马铃薯的原生质体融合，成功地培育出了“番茄马铃薯”杂种植株。如下图，其中①——⑤表示过程，英文字母表示细胞、组织或植株。据图回答下列问题：（1）实现过程②的技术是________。与过程③密切相关的具有单层膜结构的细胞器为__________。（2）在利用杂种细胞培育成为杂种植株的过程中，依据的原理是_____________，其中过程④相当于____________过程，⑤涉及的分裂方式为_______________。（3）若番茄细胞内有m条染色体，马铃薯细胞含n条染色体，则“番茄—马铃薯”细胞内含__________条染色体；若杂种细胞培育成为“番茄—马铃薯”植株为四倍体，则此杂种植株的花粉经离体培育得到的植株属于几倍体植株？__________。（4）如果形成c细胞的a、b细胞都是番茄细胞，那么更简单的得到番茄植株f的处理方法是__________________________________。（5）若a、b依次为小鼠骨髓瘤细胞和B淋巴细胞，那么该方案的目的是                 。