A DNA segment exerts 200 times stronger influence on language than other genetic regions

Discovery of Regulatory DNA Regions

According to НВ — Техно: Scientists at the University of Iowa have identified that regulatory DNA segments called HAQERs account for less than 0.1% of the genome yet have a 200-fold greater impact on language abilities compared to other genomic areas. This finding emerged from a study analyzing DNA samples from 350 schoolchildren in Iowa collected during the 1990s. The research was published on June 13, 2026, in the journal Science Advances. These HAQERs (Human Accelerated Regions) are known to have evolved rapidly in humans, making their outsized role in language particularly noteworthy.

Lead researcher Jacob Michaelson noted that 'language is one of the defining traits of Homo sapiens.'

This underscores the significance of linguistic abilities in human evolution. The presence of HAQERs in Neanderthals suggests that the biological foundation for language may have emerged before modern humans appeared. The study also indicates that certain genetic features of HAQERs in Neanderthals might have been even more pronounced than in contemporary humans.

How HAQERs Shape Speech

Approximately 30 years have passed since the project began, during which researchers focused on the genetic underpinnings of speech. The discovered impact of HAQERs on speech development is remarkable, given that these DNA regions occupy such a tiny fraction of the genome yet exert a significant effect on language skills. This research opens new avenues for understanding the evolution of language and communication throughout human history.

The study's outcomes could greatly influence future research in genetics and linguistics. Investigating HAQERs may help clarify how evolutionary changes in the human genome influenced the development of speech and could also simplify the study of language disorders. This might unlock new possibilities for therapy and support for individuals facing communication challenges.