English to Spanish Other Social Science, Sociology, Ethics, etc. ethics/cloning

 A couple wishes to have children, but both adults are carriers of a lethal recessive gene. Rather than risk the one in four chance of conceiving a child who will suffer a short and painful existence, the couple considers the alternatives: to forgo rearing children; to adopt; to use prenatal diagnosis and selective abortion; to use donor gametes free of the recessive trait; or to use the cells of one of the adults and attempt to clone a child.

Mi versión:
 Una pareja desea tener hijos, pero ambos adultos son portadores de un gen recesivo letal. En lugar de optar a correr el riesgo de que la posibilidad de concebir un niño que sufrirá una corta y dolorosa existencia sea de uno entre cuatro, la pareja considera las siguientes alternativas: