7. The Mechanism of negative reverse connection in sex ratio regulation

More than 30 years ago, specialists postulated that intensity of sexual activity is a mechanism of negative reverse linking between the secondary and tertiary ratios of a population. This is easy to explain. When there are more males than females in a population, then the rate of male sexual activity decreases, and conversely, when there are more females then males, it rises. All this follows common logic, and does not require further explanation.

From this insight, we can draw some conclusions. In the case of a preponderance of males, the rate of female births should rise, so that in the next generation the sexes will balance out. In the case of a preponderance of females, the male birth rate will rise, and the sexes will also balance out.

Diagram 3. The regulation of tertiary and secondary sex ratio through the intensity of sexual activity

Diagram 4. Sex hormones in man during increasing sexual activity rhythm

Since the general intensity of sexual activity in a population is an aggregate of the sexual lives of many individuals, the study of individuals should be of particular interest, all the more so considering that significant variability between individual sexual behavior has already been established. In men, the rhythm of sexual life is determined by the specifics of the system of sex-hormones, and the influence of the above-mentioned cyto-genetic mechanism of pre-zygotic determination, including glandulocyte, a link in the process of spermatogenesis at the stage of the transformation of spermatocyte-1 to spermatocyte-2, and the mechanism of crossing-over.