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From Chronogenetics to Phenogenesis*
Published online by Cambridge University Press: 01 August 2014
Extract
Allow me to start by observing that, in the word “reproduction”, the initial syllable, Re, has a remarkable importance, at least to the geneticist. In fact, when we say “reproduction”, we do not merely mean that a living being is produced, but we also mean that the production of such a living being implies the repetition of a model that is present in the species, in the population, in the family.
Moreover, the model that is reproduced is not only that of an embryo, of a fetus, of a neonate, but is also that of a child, of an adolescent, of an adult, of an old man.
Reproduction is therefore the repetition of a model that is not limited to the amphimixis, to gestation or birth, but that dominates throughout the entire cycle of life with a continuous variability, that is, through a dynamic and individualized phenogenesis. Such an extension of the concept of reproduction from the stage of conception to the standards of the successive ages, requires that a view based on immediate times be substituted with a view based on long times. This means, in other words, that a new parameter should be explicitly considered as part of the zygote's blueprint: the chronologic parameter.
- Type
- Research Article
- Information
- Acta geneticae medicae et gemellologiae: twin research , Volume 26 , Issue 3-4 , October 1977 , pp. 193 - 196
- Copyright
- Copyright © The International Society for Twin Studies 1977
Footnotes
Text of a lecture for the Second International Congress on Human Reproduction, Tel Aviv: 23-28 October 1977.