The sperm has 23 genetic chromosomes which contain the genetic make-up of a human being. One of these is the gender selecting chromosomes named Y or X, producing a boy or girl. Scientists began to look into gender selection seriously in the 60's. Dr Shettles in the United States concluded that sperms have different movements, resistance and endurance according to their sex chromosomes.

In 1961, Koltzoff and V Schroder, Russian scientists, concluded that sperms with different gender identifying chromosomes when placed in a laboratory tube with electrodes, were drawn by a cathode or an anode. They found that the sperm containing the Y chromosome would be drawn by a cathode and only sperms with X chromosome would be drawn to the anode. This is important as the Y chromosome produces a boy and the X chromosome a girl. These findings created much interest and some scepticism. They were, however, entirely confirmed much later by the University of Science in Tokyo (1992) which produced a widely read study that created world interest.

Another famous scientific discovery was made at the University of Roscoff in France in 1992. Their scientists found that when an egg was fertilised by a sperm, it produced a luminous ring around its membrane. This showed that there was a charge or energy associated with the ovum membrane.

These early and well known discoveries allowed us to perceive how nature "activates" the fertilisation of an egg with a 'boy' or 'girl' sperm.