4. Genetics and intelligence

Until today, there are numerous statistical studies on the IQ heritability. The observed correlation in the IQ is low, except in identical twins, which is 80-85% among them; nevertheless, if they had considered the relationship with their parents, they would also have obtained a low correlation.

The problem is they do not define the composition of the variable to study correctly. If the studies were about the correlation of the color of the sisters' flowers or rats, as in the typical examples of Mendel's laws, they would have obtained low correlations!

DNA (Public domain image)

There is not a simple linear relation; there are jumps in continuous variables with random processes governed by evolutionary genetics laws. Establishing the relations implied by the Conditional Evolution of Life, it is possible to obtain a high IQ correlation between the parents and their children. Therefore, it indirectly proves the coherence of the cited theory of evolution.

The influence of genetics on cognitive abilities has been and continues to be an intense topic of debate because of its possible social consequences.

The EDI Study shows both the hereditary nature of relational intelligence in general and intelligence in the strict sense –Conditional intelligence with high reliability; in other words, it proves a large part of the GTCEL itself.

Although Statistics is famous for its vulnerability to manipulation, it is also true that some people do not want to recognize the reality as evident as it may be. They are happier living in their imaginary world!

We will briefly look at a few points in favor and against a high correlation between genetics and intelligence, and at the difficulties or elements that allow for the coexistence of such different positions.


4.a) Genetic predisposition

4.a.1 Highly gifted children

The existence of gifted children indicates beyond reasonable doubt the genetic inheritance of intelligence.

Another significant argument supporting the genetic inheritance of human intelligence is that it has not been possible to isolate any specific environmental cause, which in itself affects intelligence. In addition, brothers and sisters with similar environments and different levels of intelligence exist.

Furthermore, the fact that children intellectually, physically, or artistically gifted exist supports the hereditary character of these abilities.

4.a.2 Cognitive processes and genetics

If we accept concepts of formal logic, intelligence, and intuition as variations of the cognitive processes due to the method VIG. Indirectly, we are accepting the genetic origin of the intelligence.

The method of Verification of Genetic Information occurs, in this case, just after the genetic transmission and even after the initial development of a new being. However, we want to conserve the adjective related to genetics in the name of this method to indicate that the genes determine the operative structure.

The book Conditional Evolution of Life includes a section on the theoretical framework of the EDI Study about the nature of intelligence and genetics with or without the application of the method of Verification of Genetic Information.



An ever-present issue when studying the genetic inheritance of intelligence is the possibility of its improvement.

If intelligence is a genetic characteristic, then it seems there is no chance of enhancement. In this case, it would represent an inequality among human beings from the very beginning, which is not very pleasant for the majority of people; this leads to denying the genetic inheritance of intelligence unless it is proved absolutely, an impossible goal when is already proven beyond the evidence.

However, in the future, it may be possible to consider improving intellectual capacity, despite its genetic character, if the technology of genetic engineering advances adequately. It is still a long way off, but maybe not as far as we might think. We discuss the application of genetic engineering to increase intelligence in the following paragraphs.

The EDI StudyEvolution and Design of Intelligence– demonstrates not only the heritability of connected functions that make up intelligence but also that they are mainly in a single chromosome.

Supposing the conclusions of this study are correct, the problem of improving inherited intelligence would reduce to the improvement of the chromosome involved. It would be easy to identify which chromosome is responsible; nevertheless, it looks is the sex chromosome, as much Y as X.

A film discussing the general idea of selecting descendant’s qualities with great tenderness and respect for the individual’s freedom regarding whether to use genetic engineering or not is Gattaca. Moreover, Gattaca focuses on the subject of genetic intelligence but at no point goes into technical detail.

A problem of altering hereditary qualities relates to the loss of identity or the evolutionary line from the parents to the child. Consequently, it seems strange to consider specific changes due to their moral implications. However, as in Gattaca, if the parents’ freedom of choice exists and, on the other hand, characteristics that they did not want to change artificially will continue to evolve, there would not be any moral objection to the possibility of applying the technique of genetic engineering to improve intelligence as is currently being done to avoid congenital diseases.

We previously stated the intelligence concentrates in one chromosome. If we think about the reasons chromosomes exist, we will realize they represent independent units of genetic code; that is to say, a new being can form from genetic code from different people’s chromosomes. It is what nature precisely does; it works well, so functional incompatibility does not exist between genetic development involving different chromosomes.

Consequently, if genetic engineering were to allow a change to the whole chromosome in the first moments after fertilization, we could find ourselves with a new being with all the characteristics of the progenitors except those derived from intelligence and all those characteristics contained in the same chromosome.

It is not about forcing or inventing something strange regarding genetic inheritance; what it is about is the possibility of applying genetic engineering in the future (50 years). It could be acceptable as long as the conclusions in the EDI Study were correct, there were not collateral problems, other personal characteristics evolve naturally, and, of course, that people could freely choose with the necessary guarantees.



Nevertheless, there is no necessity to wait for so long to achieve improvements in intelligence with genetic engineering methods if the conclusions of the EDI Study are correct with regard to the genetic inheritance of intelligence, the update of the X chromosome, and if the sex chromosome is the carrier of the genetic information linked to intelligence.

The Darwinout and Menssalina experiments of quantitative genetics could confirm the mentioned conclusions beyond any reasonable doubt.

Also, both experiments could help to establish the real chromosome responsible for the evolution of intelligence in the case of not being the X and Y sex chromosomes.

The preimplantation genetic diagnosis is successful in the elimination of the genetic inheritance in certain diseases. Another matter is, of course, the cost of this procedure and the collateral effects that currently exist, such as multiple births.

We would like to point out that some severe intelligence disorders relate to the genetic inheritance of certain diseases and, at the same time, the difficulty of distinguishing between diseases and people’s characteristics.

Therefore, it is crucial that any action on this field respect people’s freedom to choose with the necessary guarantees and with adequate information within the social freedom expressed through the political decision of allowing or not its practical implementation.

Finally, to point out the significance of these scientific developments in the genetic inheritance of intelligence and the consequent responsibility of individuals as well as public and private organizations to favor or directly determine if the current proposals are correct or not.

The scientific analysis must always separate from the ethical one since we already have enough historical examples of people trying to deny scientific evidence for ethical or moral reasons and the only thing they achieved was an unnecessary delay in the scientific and technical development of our current civilization.

The closest case would be Mendel’s Laws!