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SCIENTISTS FIND MATERNAL GENES PLAY MAJOR ROLE IN CHILD INTELLIGENCE

  • Writer: Anjali Regmi
    Anjali Regmi
  • Dec 12, 2025
  • 3 min read

Introduction A new study from Cambridge University has sparked fresh discussion about how intelligence is inherited. According to the research, certain genes located on the maternal X chromosome appear to play a stronger role in shaping early brain development than previously understood. This finding has captured wide public interest, but scientists are clear that genes are only one part of the story. Environment, care, learning experiences and emotional support are equally important in determining how a child’s intelligence grows over time. This balanced understanding helps us avoid oversimplifying a topic as complex as human intelligence.



Understanding the Role of Maternal Genes Humans inherit one X chromosome from their mother and either an X or Y chromosome from their father. Because mothers always pass an X chromosome, children receive more X linked genetic material from the maternal side. The study suggests that several genes associated with memory, reasoning and brain development are located on this chromosome. These genes may influence how certain parts of the brain form during childhood. The findings do not mean fathers have no impact but simply highlight that some influential genes are more commonly inherited from mothers. This discovery offers new insight into biological factors that guide early development.

Why Intelligence Cannot Be Linked to Genes Alone While the study highlights the importance of maternal genes, the researchers repeatedly stress that intelligence does not come from genetics alone. Even if a child inherits strong cognitive potential, it can only be fully developed in the right environment. A child who receives supportive parenting, good nutrition, meaningful educational exposure and emotional safety is more likely to reach their full intellectual ability. On the other hand, stressful conditions, poor learning environments or limited stimulation can hinder development. This shows that intelligence is best understood as an interaction between nature and nurturing experiences.

Influence of Early Brain Development Childhood is a period when the brain grows rapidly, forming connections that lay the foundation for future learning. The Cambridge researchers explain that certain maternal genes affect how neural circuits are built during this crucial time. For example, genes that support memory formation or problem solving may guide how efficiently the brain organizes information. These genetic influences can affect how quickly a child learns language, grasps concepts or adapts to new situations. Still, brain development is extremely flexible. Positive experiences, curiosity and encouragement can strengthen these neural pathways regardless of genetic starting points.

Shared Family Environment Matters Greatly It is easy to assume that higher intelligence automatically comes from inherited traits, but plenty of studies show that home environment significantly shapes learning. Children who grow up in families that value reading, creativity, conversation and exploration often develop stronger cognitive skills. Parents who show patience, provide guidance and encourage questions help build confidence and independent thinking. Even simple daily interactions such as storytelling or playing educational games can have a lasting effect on brain development. So while the new findings highlight a genetic contribution, family habits and nurturing relationships remain equally influential.

Role of Fathers and Other Caregivers Although maternal genes may provide certain cognitive advantages, fathers and other caregivers play a major role in how these abilities are expressed. A father’s involvement through emotional warmth, learning activities, mentorship and play deeply supports intellectual growth. Fathers also contribute half of the child’s DNA, which includes genes linked to attention, motivation, creativity and social intelligence. The research does not diminish the importance of the father’s genetic role but simply identifies where specific brain related genes are located. In real life, both parents shape a child’s future through continuous support and shared experiences.

How Society Can Support Children’s Intelligence If intelligence depends on both genetics and upbringing, then society also has a responsibility to create nurturing environments. Access to quality education, safe spaces for play, nutritious food and mental health support can greatly improve a child’s learning potential. When families have the resources they need, children are more likely to develop strong cognitive skills. Teachers, communities and governments all contribute to this supportive system. Investing in early childhood care and education can lead to healthier, more capable and confident adults in the future. Such efforts show that intelligence flourishes when multiple parts of society work together.

Conclusion The Cambridge study offers an exciting look into how maternal genes contribute to early brain development, but the conversation should not stop with genetics. Intelligence is shaped by a combination of inherited traits, emotional support, meaningful experiences and a positive learning environment. Mothers may pass on certain brain linked genes, but fathers and caregivers also provide essential guidance. Ultimately, every child has unique potential that can grow with the right nurturing. Understanding this balance helps us appreciate both the science of heredity and the human power of care, encouragement and education.



 
 
 

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