推荐回答(4个)
没有,狼和狗的染色体数并没有发生变化,而且狗和狼的杂交已经发生了,埃塞俄比亚狼时常会和家犬杂交,美国警察也用狗与狼杂交,在牧区有时狗也会和狼杂交。
狼进化为最初的狗只经历了9代,他们的变化并不是太大,而且常有,所以人们根本不会惊奇什么狗狼兽,作为人类最崇拜的狮虎这两种力量的象征,而且大自然中不存在创造兽,人类当然不会在意狗狼这种可能发生无意义的事。不存在生殖隔离是指可以生出也孕育后代,狮虎兽雄性不可繁殖,所以狮虎存在生殖隔离。
拓展资料:
生殖隔离指由于各方面的原因,使亲缘关系接近的类群之间在自然条件下不交配,或者即使能交配也不能产生后代或不能产生可育性后代的隔离机制,但跨物种之间生殖隔离有很多出现之后又消失的情况 [1] 。若隔离发生在受精以前,就称为受精前的生殖隔离,其中包括地理隔离、生态隔离、季节隔离、生理隔离、形态隔离和行为隔离等;若隔离发生在受精以后,就称为受精后的生殖隔离,其中包括杂种不活、杂种不育和杂种衰败等。野猪在全世界有27个亚种。亚种间和亚种内核型都有一些差异,染色体数(2n)在36-38之间,如西欧野猪2n=36或37,日本野猪2n=38,但彼此间没有繁殖障碍。

狗和灰狼是没有生殖隔离的。在生物学上狼与狗为同一物种,为现生犬科动物中体型最大的物种。狗是灰狼的亚种。按照生物学的定义,狗和灰狼是没有生殖隔离的。狗和狼都有39对染色体,即78条。黑背、侧纹胡狼染色体少一对。

拓展资料:
狗属于脊索动物门、脊椎动物亚门、哺乳纲、真兽亚纲、食肉目、裂脚亚目、犬科动物。中文亦称“犬”,狗分布于世界各地。狗与马、牛、羊、猪、鸡并称“六畜”。
狼,国家二级保护动物。共46个亚种,体型中等、匀称,四肢修长,趾行性,利于快速奔跑。
没有,狼和狗的染色体数并没有发生变化,而且狗和狼的杂交已经发生了,埃塞俄比亚狼时常会和家犬杂交,美国警察也用狗与狼杂交,在牧区有时狗也会和狼杂交。狼进化为最初的狗只经历了9代,他们的变化并不是太大,而且常有,所有人们根部不会惊奇什么狗狼兽,作为人类最崇拜的狮虎这两种力量的象征,而且大自然中不存在地创造兽,人类当然不会在意狗狼这种可能发生无意义的事。不存在生殖隔离是指可以生出也孕育后代,狮虎兽雄性不可繁殖,所以狮虎存在生殖隔离。
狗是狼的一个亚种,没有生殖隔离。与自然存在的物种与亚种不同,狗的品种与品系是人工择育的结果,在各品种之间,外观可能存有巨大差异但不存在实质的生殖隔离。在育种的历史上,人们可能让不同品种的狗、甚至与野狼交配以孕育出被认为更好的新品种,但也有一些品种在培育过程中,人们可能为了保留该品种的一些特质,而故意让它们近亲繁殖,以维持所谓的“纯正血统”。长期近亲繁殖的作法可能导致其后代出现近交衰退的问题,如体质不好,寿命短等现象。
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