Safiel
22
There are no bright lines, no black and white, but only endless shades of grey on this issue.
Some in my family (mother’s side) carry the gene for a lethal allele. The gene, if active causes a massive heart deformity that is 100% fatal. Death usually occurs in the final month of gestation, but occasional as a stillbirth and sometimes the fetus survives the birth and lives for a day or so.
Fortunately, this can now be screened for very early on and the pregnancy can be terminated. In this case, you are merely speeding up what is bound to happen anyway and sparing the mother the anguish (and danger) of a term pregnancy only to lose the child at or near birth.
In the case of lethal alleles, screening out these pregnancies is justified, particularly as the fetus is already, by definition, doomed.
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