Please compare maternal inheritance and maternal effect
Please compare maternal inheritance and maternal effect
发布时间：2025-07-25 06:12:55
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答案：【计分规则】: 1.母性遗传是亲代核基因的某些产物或者某些因子积累在卵细胞的细胞质中，对子代的某些性状的表现产生影响的现象。这种现象只能影响子代的性状，不能遗传。因此F1代的表型受母亲的基因型控制，属于细胞核遗传体系；细胞质遗传是细胞质中的DNA或基因对遗传性状的决定作用。由于精卵结合是，精子的细胞质往往不进入受精卵中，因此，细胞质遗传性状只能通过母体或卵细胞传递给子代，子代总是表现为母本性状，属于细胞质遗传体系。2.母性影响符合孟德尔遗传规律；细胞质遗传是非孟德尔式遗传。3.母性影响杂交后代有一定的分离比，只不过是要推迟一个世代而已；细胞质遗传杂交后代一般不出现一定的分离比。
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