Conception to the union is understood of the spermatozoon with the ovum. One afﬁ rms that at this moment a “human being genetically individualized” arises, therefore, a subject of right, worthy of protection and trusteeship. Fertilized the ovum we are in the presence of a human being, with present life that is characterized indeed by its individuality, since it is veriﬁ ed that when the 23 are united chromosomes of the spermatozoon with the 23 of the ovum arises what “zygote” is denominated, unique, original being, with a totally own and unique genetic code. That is to say, Beginning occurs to the Life.
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