For the past 4 decades, we’ve been told that almost everything is genetic, from the “serious” about diseases, to the Noble level of stupidity – identifying in France the followers of salted or sweetened butter, or the ability to hold chopsticks in the populations of San Francisco, only to find out that the inhabitants of China Town are better! Or is the fact that a young person likes dogs of genetic origin?
in another text, i’ll deal with the ineptitude and errors of those who think that autism and other brain-based syndromes are due to genetic mutations. here, i’ll just remind you of the importance of epigenetics. Indeed, epigenetics is one of the many factors that these geneticists ignore. To put it succinctly, genes are not switched on or off anarchically; there are control mechanisms that decide when it’s appropriate to do so.
They are linked to environmental factors, pollution, stress, and a plethora of other factors, and control the expression of various diseases such as diabetes and heart disease, as well as brain disorders such as depression, adiction, anxiety or fear. They are transmitted over several generations, without the genomic sequence being involved. A famous case in point is that of the Dutch villages that were starved and thirsty for almost 1 year, and the women who were pregnant gave birth to children who, over several generations, suffered from illnesses, notably cerebral. In short, the complexity and richness of the genomic sequence is nothing without the control of epigenesis, which controls its expression and expresses all its plasticity. As a reminder, our DNA is no richer than that of a kernel of corn, and recently a dipnose a prehistoric “lungfish” capable of breathing in and out of the water. These fish are closely related to the Tetrapods – four-limbed animals of which we are a part – which rose from the water 400 million years ago. Their DNA is 30 times richer than ours. They have a complex system of “transposons”, repeated DNA sequences capable of multiplying on their own, a kind of phrase copied and pasted ad infinitum into the genome book with no relation to the phrase in which they are found. We don’t quite understand the advantage this complex organization has given him, but it does illustrate the limits of the importance of the number of elements in the genome.
https://www.linkedin.com/feed/update/urn:li:activity:7227212541297389568
