Since this is a very early stage of embryonic development, the embryo will compensate for the absence of the extracted cell and continue to multiply naturally. Therefore, performing PGD on the embryo does not imply any alteration in its genetic endowment.
However, this technique involves the manipulation of the embryo, which may affect its ability to evolve. This is the reason why PGD is generally recommended only in the necessary cases and not in a generalized way.
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