The genetic steve jones concerts the end of human evolution
Modern equal opportunities, a significant reduction in child mortality, the endless of despotic socio elements and an alleged increase in young vaders – all these factors were committed to consolidating the status quo, so jones. The expert is skeptical.
No end of history
Just over 15 years ago, under the impression of the collapse of the soviet union and the settlement of the cold war, the american political scientist francis fukuyama for coarse caused a stir as he postulated the end of history short and placant. Fukuyamas thesis, which went out of a worldwide triumph of the democracy based on market economy, was explained by the unfinished history, which made no established institutions, explores the field to room, for zero and void.
An end to evolution?
Today, so it seems, the dazumal rapidly ad acta was experienced a resurrection in a transformed form, although no longer the continued existence of the general history as such in doubt, but now the biological further development of man is put to the disposition. The british genetics steve jones dearly undisturbed with a punched announcement: the evolution of man is at one end due to the prevailing socio-cultural conditions in the western countries, which were in principle to propagate all reproductive individuals.
Social state vs. Choice
If you are right, jone’s arguments are not entirely going to the emptiness. Finally, it is not possible to point out that the classical selection factors are undermined by modern social systems, by a – albeit in the dwindling social state. But even if the reproductive fitness in humans – d. H. The ausmab, which must be given less importance to the given environmental conditions – in no time on the propagation success – to the given environmental conditions – in today’s time, the evolution could not be put on a long time.
The evolutionary biologist thomas junker from the university tubingen refers to one "massive pranatal selection" in the womb, which falls to 30% of the embryos to the victim. For those embryos, which as babies see the light of the world, while undoubtedly, there are very high opportunities to come into the reproductive age, but this again says this individuals about the ultimate reproduction rate of these individuals. It is obvious to ame that the partner search in our society also "natural" selection process is subject. A clear determination of the factors in this context, but not least because of a largable taboo through society and science, is difficult, albeit undoubtedly, as junker further exports, "a whole series of properties, health and physical attractiveness to social and mental skills that influence the sexual success of manners and women", exists.
Mutations in old age
In order to underpin his thesis from the end of human evolution, jones also relies on an alleged increase in young vaters in our social system, which the mutation rate is pushing down and thus counteracting the gene pool. While it is true that the likelihood of the occurrence of mutations with age increases, but it generally speaks very much that it has come to a percentage increase in young vaders or. Will come in foreseeable time. But secured data can only be very difficult to raise, especially since our society also has an increasing number of illegitimate children. From a sociological perspective, the american biologin bobbi low is to be considered, but a rising percentage of young vaders is hardly compatible with our social model marked by constantly long training paths.
Fertilitat of the woman
Another vulnerability in jones` theorgemeiebau is opened by henry harpending, his distinguished professor for anthropology at the university utah, whose own research work in sharp contrast is open to the end of evolution. Harpending acknowledges the lack of consideration of different fertilitat rates in women. From an evolutionary point of view, the professor explains, those two percent of women with seven or more children finally as "big-time winner" valid.
But how far is the concept of evolutionant? Among other things, with cultural anthropological ies, philosopher wolfgang welsch is strongly powerful in this context for a fundamental separation between endogenous and exogenous evolutionary factors. This means a distinction between biological and cultural evolution. Cultural evolution is the tradition of behaviors and techniques within a population. This transgenerational transmission of information is surprisingly not only in humans, but can also be stated in different species species. Ultimately, this cultural evolution is thus a learning process.
However, the question arises as to whether a clear dividing line between biological and cultural factors is superimposed. According to recent research results from the field of epigenetics, the cultural-specific lifestyle lit its mark in our inheritance. Consequently, first of the technological progress or. Finally find our culture as a whole, before it could lead to a failure of evolution.