R
Rosalinda
Guest
Voco Pro Tatiano,
I have every respect and admiration for farmers: my grandfather was one. Now to address your concern about the twinning of embryos. Much has been written which is too speculative and erudite for my taste or understanding. This article, however, written by Patrick Lee, a professor at the Fransican University of Steubenville, and Robert P. George who is the McCormick professor of jurisprudence at Princeton is very clear. The First Fourteen Days of Human Life appeared in the New Atlantis, a journal of technology and society.
[sign]Viewed biologically, the occurrence of monozygotic twinning and the possibility of fusion fail to show that in the first fourteen days the cells within the embryo constituted only an incidental mass. Just as the division of a single, whole flatworm into two whole flatworms does not show that prior to that division the flatworm was not a unitary individual, just so with the human embryo that twins. Parts of a flatworm have the potential to become a whole flatworm when isolated from the present whole of which they are part. Likewise, at the early stages of an embryo’s development, the degree of cellular specialization has not progressed very far (even if the process of orderly cellular activity is underway from the beginning), which means the embryo’s cells or groups of cells can become whole organisms if they are divided and have an appropriate environment after the division. But that does not show that prior to such an extrinsic division the embryo is a mere mass of cells rather than a single, complex, actively developing human organism.[/sign]
thenewatlantis.com/archive/13/leegeorge.htm
I have every respect and admiration for farmers: my grandfather was one. Now to address your concern about the twinning of embryos. Much has been written which is too speculative and erudite for my taste or understanding. This article, however, written by Patrick Lee, a professor at the Fransican University of Steubenville, and Robert P. George who is the McCormick professor of jurisprudence at Princeton is very clear. The First Fourteen Days of Human Life appeared in the New Atlantis, a journal of technology and society.
[sign]Viewed biologically, the occurrence of monozygotic twinning and the possibility of fusion fail to show that in the first fourteen days the cells within the embryo constituted only an incidental mass. Just as the division of a single, whole flatworm into two whole flatworms does not show that prior to that division the flatworm was not a unitary individual, just so with the human embryo that twins. Parts of a flatworm have the potential to become a whole flatworm when isolated from the present whole of which they are part. Likewise, at the early stages of an embryo’s development, the degree of cellular specialization has not progressed very far (even if the process of orderly cellular activity is underway from the beginning), which means the embryo’s cells or groups of cells can become whole organisms if they are divided and have an appropriate environment after the division. But that does not show that prior to such an extrinsic division the embryo is a mere mass of cells rather than a single, complex, actively developing human organism.[/sign]
thenewatlantis.com/archive/13/leegeorge.htm