salam blogger.
Choosing a pair of life But not to accompany live but will choose someone who can make the child or descendant of a noose in a desires. This will happen if we choose carefully. Actually in the process of marriage (sex), that will happen is the sperm into the egg cell. In this case the sperm is a sperm can fertilize the best of the thousands of sperm. Because many men who will die in the egg cell during fertilization, both because the pH in the acid environment of vagina and other causes. If we can in conclusion sperm can fertilize the egg cell is the best sperm, the sperm must be known that the egg cell and consists of a chromosome-chromosome and chromosome consists of a gen-gen. and children will get the best gens best half-gen (the father and mother). So it's best for the genes that half of it should select the best.