细胞质遗传与细胞核遗传的关系,区别是怎么样的

2025-04-07 19:24:05
推荐回答(3个)
回答1:

细胞核遗:细胞核中的遗传物质复制平分到两个细胞中。
细胞质遗传:指细胞质中的线粒体(动物和植物)和叶绿体(植物)随细胞分裂平均分到两个细胞中去。
区别:
(1)细胞质和细胞核的遗传物质都是DNA分子,但是其分布的位置不同.细胞核遗传的遗传物质在细胞核中的染色体上;细胞质中的遗传物质在细胞质中的线粒体和叶绿体。(2)细胞质和细胞核的遗传都是通过配子,但细胞核遗传雌雄配子的核遗传物质相等,而细胞质遗传物质主要存在于卵细胞中;
(3)细胞核和细胞质的性状表达都是通过体细胞进行的.核的染色体有均分机制,遵循三大遗传定律;细胞质遗传物质(如线粒体、叶绿体等)没有均分机制,是随机分配的.
(4)细胞核遗传时,正反交相同,即子一代均表现显性亲本的性状;细胞质遗传时,正反交不同,子一代性状均与母本相同。
联系:细胞质遗传受到细胞核遗传的控制。

回答2:

回答3:

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