[Embryo selection and bioethical principles]

This paper analyzes, from the point of view of the principles of Bioethics, the problems of embryonic selection with the purpose of serving as donors of future transplant for their brothers seriously ill. Analyzed the principles of Bioethics of no malice, charity, autonomy and justice in connection with the matter explained, the author defends its moral fairness and he explains the necessity of proceeding to a legal reform which permits to accommodate in the Spanish Legal Code to this kind of embryonic selection, since nowadays laws into effect prohibit this practice with the purpose discussed here.