Essays on aspects of human reproduction

On these pages you can find a number of essays written in the past for various occasions, that relate to the procreation of man.

Mitochondria: the most successful form of life

When you accept that micro-organisms such as viruses and bacteria are separate forms of life, you should also accept that mitochondria are separate life forms. Mitochondria are organisms that are supposed to have entered the cell about 4 billion years ago, at the moment that oxygen entered the atmosphere, just as viruses and bacteria enter the cell. However the cell and the mitochondrium complement each other; the one cannot live without the other. Mitochondria have a totally different form of procreation, by asexual duplication, cloning. They have separate DNA, and their mode of inheritance is through the maternal route only. Paternal mitochondrial DNA is destroyed. This page will contain an essay on the most successful life form. There are more mitochondria in the world that any other living organism.
Is it, for the mitochondrium, that the cell is only there to sustain its own life form? Or is the mitochondrium only necessary for the cell to stay alive in an atmosphere rich of oxygen?

Pheromones and Fertility

Pheromones play an important role in procreation in many animal species. What about their role in the human? Do they exist, and if so, what influence do they have on human fertility and sexual behaviour? What is true of the so called dormatory effect? What effect, if any do they have on the ovulatory cycle?  Do pheromones facilitate or inhibit sexual behaviour, or both or none of these?  In this essay I will elaborate, amongst others, on the work of Monti- Bloch, that of Martha Mc Clintock and others. This is an excerpt of a presentation given for fun, at our yearly christmas dinner.

Human life

When does human life begin? A view of the different religions on the ensoulment of the human body. Excerpt from a presentation given for the Dutch society for Psychosomatic Obstetrics and Gynaecology.

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