Poczęcie człowieka i status jednokomórkowej ludzkiej zygoty z perspektywy bioetyki katolickiej
Human Conception and the Single-Celled Human Zygote Status from the Catholic Bioethics Perspective

Summary/Abstract: In the discussions on the human zygote status, the issue of its animation appears only exceptionally. Current Church Magisterium teaching on the beginning of human life highlights the fact that the life begins with the conception. The moment when single-celled zygote comes into being is very often considered as a start of a new human life. As embryology states, this takes place 12 to 24 hours after fertilization. The epigenetics discoveries allow to claim that a human character of a zygote is defined. From the moment of conception, that is when the head of spermatozoon combines with oocyte cytoplasm and two pronuclei come into existence (the nuclei of both male and female gametes), the processes related to a new human life begin.

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