Is your intelligence inherited from your mother and not from your father?
This is a controversial claim. But it is not simply a street talk. It is a research finding.
For a quite long period of time, the common belief is that both father and mother equally contribute to the genetic makeup of their children. In fact, the 23 pairs of chromosomes are evident enough that the share is 50/50.
This means that half of your genetic composition came from your father; while the other half came from your mother.
However, the new research finding suggests that you inherit your intelligence from your mother and not from your father.
Of course, this could spark an inevitable debate. But an open mind can surely understand this.
But how does this possible?
It all starts with the chromosome. A chromosome is a thread-like structure inside of each cell. Each chromosome carries genetic information that can be transferred through fertilization.
Each cell in the human body carries one pair of chromosomes. Males have X and Y, while females have two X chromosomes. These chromosomes will later on the influence the sex of the offspring.
The role of conditioned genes
A conditioned gene is gender specific. It contains a tagging system that traces gene origin and activates or deactivates it. The activated genes influence genetic development while the deactivated will not. So if the maternal trait is deactivated, the paternal is activated. In contrast, if the paternal trait is activated, the maternal is deactivated.
This idea is similar to dominant and recessive gene concept. The dominant traits will most likely influence the trait of the offspring. Conversely, the recessive genes will only serve as a background. It is there but it’s not influential and visible.
So how exactly an intelligence inherited?
Remember that females have more X chromosomes than males, right? Because females have more X chromosomes, women are more likely to influence children’s intelligence than men. Intelligence is believed to be a conditioned gene that comes from a mother. This is because cognition is highly influenced by the X chromosome.
The idea that intelligence is inherited mostly from a mother is not new. In fact, a similar study was conducted in 1984 at the University of Cambridge. The scientists investigated both the brain and genomic conditioning.
The researchers in that study concluded that the larger part of the brain’s development was mainly influenced by a mother’s genetic contribution.
In the same manner, the recent study found that mothers’ cognitive ability best predicts the child’s intelligence.
Of course, there will be debates on this idea. Intelligence is still a complex and not fully understood human ability. One research finding may dispute the other.
But mothers are influential beyond genetic inheritance. The bonding and nourishment are both crucial to an offspring’s development.
I’m a licensed psychometrician, author, and blogger. I’m currently working as a University instructor teaching psychology. I love writing and doing psychological research.