Sexual production
The mode of human reproduction is sexual reproduction, which requires the combination of male sperm and female eggs to form fertilized eggs. A mother's egg can only be fertilized by the sperm of her father or husband, not her son's.
Genetic law
From a genetic point of view, if a mother is pregnant with a son's child, the child's genes are half from the mother and half from the father. However, because the father's gene already exists in the mother's body, half of the child's gene will be copied, which obviously violates the genetic law.
♀? twins
Identical twins have exactly the same genes, but if the mother of identical twins is pregnant again and gives birth to identical twins, it doesn't mean that the mother is pregnant with her son's child, because the two children are different in gender.
The magic and greatness of life
From a biological or genetic point of view, it is impossible for a mother to conceive a son's child. This mystery makes us more afraid of the magic and greatness of life!
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