Bioethics 15 (5-6):382-397 (2001)

Authors
Christian Munthe
University of Gothenburg
Abstract
The phenomenon of twinning in early fetal development has become a popular source for doubt regarding the ascription of moral status to early embryos. In this paper, the possible moral basis for such a line of reasoning is critically analysed with sceptical results. Three different versions of the argument from twinning are considered, all of which are found to rest on confusions between the actual division of embryos involed in twinning and the property of early embryos to be divisible, be based on highly questionable ethical assumptions, or to imply inconsistent claims regarding the moral importance of potentiality and/or the moral status of embryos. This is taken to expose a number of related inconsistencies in the moral basis of pro-life positions. In particular, ascribing moral significance to the property of being (in)divisible is found to be incompatible with the claim that human individuals possess unique values which could underpin an absolute moral ban on murder.
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DOI 10.1111/1467-8519.00249
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The Constitution of the Human Embryo as Substantial Change.David Alvargonzález - 2016 - Journal of Medicine and Philosophy 41 (2):172-191.

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